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Friday, February 26, 2016

Banff National Park




Banff National Park


Banff National Park is Canada's oldest national park, established in 1885 in the Rocky Mountains. The park, located 110–180 kilometres (68–112 mi) west of Calgary in the province of Alberta, encompasses 6,641 square kilometres (2,564 sq mi)of mountainous terrain, with numerous glaciers and ice fields, dense coniferous forest, and alpine landscapes. The Icefields Parkway extends from Lake Louise, connecting to Jasper National Park in the north. Provincial forests and Yoho National Park are neighbours to the west, while Kootenay National Park is located to the south and Kananaskis Country to the southeast. The main commercial centre of the park is the town of Banff, in the Bow River valley.

Banff National Park
The Canadian Pacific Railway was instrumental in Banff's early years, building the Banff Springs Hotel and Chateau Lake Louise, and attracting tourists through extensive advertising. In the early 20th century, roads were built in Banff, at times by war internees from World War I, and through Great Depression-era public works projects. Since the 1960s, park accommodations have been open all year, with annual tourism visits to Banff increasing to over 5 million in the 1990s. Millions more pass through the park on the Trans-Canada Highway. As Banff is one of the world's most visited national parks, the health of its ecosystem has been threatened. In the mid-1990s, Parks Canada responded by initiating a two-year study, which resulted in management recommendations, and new policies that aim to preserve ecological integrity.

History
Throughout its history, Banff National Park has been shaped by tension between conservation and development interests. The park was established on 25 November 1885 as Banff Hot Springs Reserve, in response to conflicting claims over who discovered hot springs there, and who had the right to develop the hot springs for commercial interests. Instead, Prime Minister John A. Macdonald set aside the hot springs as a small, protected reserve, which was later expanded to include Lake Louise and other areas extending north to the Columbia Icefield.

Archaeological evidence found at Vermilion Lakes radiocarbon dates the first human activity in Banff to 10,300 B.P. Prior to European contact, aboriginals, including the Stoneys, Kootenay, Tsuu T'ina, Kainai, Peigans, and Siksika, were common in the region where they hunted bison and other game.
With the admission of British Columbia to Canada on 20 July 1871, Canada agreed to build a transcontinental railroad. Construction of the railroad began in 1875, with Kicking Horse Pass chosen, over the more northerly Yellowhead Pass, as the route through the Canadian Rockies.Ten years later, on 7 November 1885, the last spike was driven in Craigellachie, British Columbia.

Wildlife
The park has 56 mammal species that have been recorded. Grizzly and black bears inhabit the forested regions. Cougar, lynx, wolverine, weasels, northern river otter and wolves are the primary predatory mammals. Elk, mule deer, and white-tailed deer are common in the valleys of the park, including around (and sometimes in) the Banff townsite, while moose tend to be more elusive, sticking primarily to wetland areas and near streams. In the alpine regions, mountain goats, bighorn sheep, marmots and pika are widespread. Other mammals such as beavers, porcupines, squirrels, chipmunks, and Columbian ground squirrels are the more commonly observed smaller mammals. In 2005, a total of five caribou were counted, making this species one of the rarest mammals found in the park.
Due to the harsh winters, the park has few reptiles and amphibians with only one species of toad, three species of frog, one salamander species and two species of snakes that have been identified.At least 280 species of birds can be found in Banff including bald and golden eagles, red-tailed hawk, osprey, and merlin, all of which are predatory species. Additionally, commonly seen species such as the gray jay, American three-toed woodpecker, mountain bluebird, Clark's nutcracker, mountain chickadee and pipit are frequently found in the lower elevations. The white-tailed ptarmigan is a ground bird that is often seen in the alpine zones. Rivers and lakes are frequented by over a hundred different species including loons, herons and mallards who spend their summers in the park.
Endangered species in Banff include the Banff Springs snail (Physella johnsoni) which is found in the hot springs of Banff. Woodland caribou, found in Banff, are listed as a threatened species.

Tourism
Banff National Park is the most visited Alberta tourist destination and one of the most visited national parks in North America, with 3,927,557 visitors in 2004/2005.During summer, 51 percent of park visitors are from Canada (30 percent from Alberta), while 31 percent are from the United States and 14 percent from Europe. Tourism in Banff contributes an estimated C$6 billion annually to the economy. A park pass is required for stopping in the park and permit checks are common during the summer months, especially at Lake Louise and the start of the Icefields Parkway. A permit is not required if travelling straight through the park without stopping. Approximately 5 million people pass through Banff annually on the Trans-Canada Highway without stopping.Attractions in Banff include Upper Hot Springs, and a 27-hole golf course at Fairmont Banff Springs Hotel, and three ski resorts including Sunshine Village, Lake Louise Mountain Resort, and Mount Norquay ski resort. The Banff Lodging Co is a hospitality company in the park. Day hikes, such as the Cory Pass Loop, are popular with visitors. Other activities include alpine and Nordic skiing, and horseback riding.

Backcountry activities in Banff include hiking, camping, climbing, and skiing. Parks Canada requires those using backcountry campgrounds, Alpine Club of Canada huts, or other backcountry facilities to purchase a wilderness pass. Reservations for using the campgrounds are also required.
In 2009, the Banff Lake Louise Tourism hoped the appearance of the "Crasher Squirrel" internet meme would stimulate interest in the park. The meme is based a photograph of a Minnesotan couple visiting the park on the shore of Lake Minnewanka that was "crashed" by a Columbian ground squirrel; the photograph was published in major news sources around the world and the image of the squirrel was digitally manipulated into humorous photos.


Transportation
Banff National Park is bisected by two highways that cross the Alberta/British Columbia border while another provides a third access within Alberta. The Trans-Canada Highway (Highway 1) bisects the park in an east-west direction, connecting it to Vancouver to the west and Calgary to the east. Highway 93 bisects the park in a north-south direction, connecting it to Cranbrook to the south and Jasper to the north. The portion of Highway 93 north of Lake Louise is known as the Icefields Parkway whereas the portion southwest of Castle Junction is known as the Banff-Windermere Parkway. Highway 11 (the David Thompson Highway) connects the Icefields Parkway at Saskatchewan River Crossing to Rocky Mountain House to the northeast. Within the park, Highway 1A, also known as the Bow Valley Parkway, loosely parallels Highway 1 between Banff and Lake Louise. Other transportation facilities within Banff National Park include a Canadian Pacific rail line that generally parallels Highway 1 and an airport known as the Banff Park Compound Heliport.



Wednesday, February 24, 2016

Bicauri National Park


Bicauri National Park

Bicauri National Park
Bicauri National Park (Portuguese: Parque Nacional do Bicuar; also called Bicuar National Park or Bikuar/Huila National Park) is a national park in Angola. It is located in the south-west region of the country on the Huila Plateau, about 120 km SE of Lubango. The park is an area of sandy hills and shrub thicket character. The climate is tropical semi-arid. Bicuar was established as a hunting reserve in 1938, and reformed as a national park in 1964. Historically known for its large mammals, such as the Black Buffalo, the park suffered heavily in the Angolan Civil War (1975-2002). During this time the animals were mostly or entirely exterminated, but the Angolan Government is now undertaking efforts to rebuild the infrastructure and resettle the animals.


Natural features
The park is bordered on the East by the Cunene River, one of the few perennial rivers in the region. The dominant vegetation is described as Angolan Miombo Woodlands and Angolan Mopane Woodlands, an area of savanna and woodlands on the plateau East of the coastal hills. Portions of the park are seasonally wet or wetland swamps and dambo grasslands.

The Bicuar stands at the northern end of a distinct ecoregion known as the Angolan Mopane Woodland. The area is known for high species richness, variable rainfall, and the importance of mopane trees to the animals and people of the region. The climate of Bicuari is described under the Köppen climate classification system as Temperate highland tropical climate with dry winters, and the warmest months temperatures averaging below 22 degC. Average rainfall is 600-800mm/year.

Animal life
The area has historically been known for large herds of common antelopes, elephants, and other large mammals. All species populations are believed to have be severely reduced the war (the park was reportedly used as a practice artillery range), poaching, and human encroachment. Since cessation of hostilities, work has begun by the Huila provincial government to rebuild the infrastructure of the park to attract and protect animals. As of 2013, it has been reported that some of the large mammals are returning to Bicuar. 

Monday, February 15, 2016

Dukhan City


Dukhan City

Thursday, February 11, 2016

Hohensalzburg Castle in Salzburg, Austria


Hohensalzburg Castle in Salzburg, Austria


Hohensalzburg Castle in Salzburg, Austria
Hohensalzburg Castle (German: Festung Hohensalzburg, literally "High Salzburg Fortress") sits atop the Festungsberg, a small hill in the Austrian city of Salzburg. Erected at the behest of the Prince-Archbishops of Salzburg with a length of 250 m (820 ft) and a width of 150 m (490 ft), it is one of the largest medieval castles in Europe. Hohensalzburg Castle is situated at an altitude of 506 m. One of the earliest depictions of the castle in the 1460s, from the Schedel'sche Weltchronik. Construction of the fortress began in 1077 under Archbishop Gebhard von Helfenstein.[2] This original design was just a basic bailey with a wooden wall. In the Holy Roman Empire, the archbishops of Salzburg were already powerful political figures and they expanded the castle to protect their interests. Gebhard's conflict with Emperor Henry IV during the Investiture Controversy influenced the expansion of the castle, with the Archbishop taking the side of Pope Gregory VII and the German anti-king Rudolf of Rheinfelden. The castle was gradually expanded during the following centuries. The ring walls and towers were built in 1462 under Prince-Archbishop Burkhard II von Weißpriach.

Prince-Archbishop Leonhard von Keutschach during his term from 1495 until 1519 further expanded the castle. His coadjutor Matthäus Lang von Wellenburg, who was later to succeed Leonhard, in 1515 wrote a description of the Reisszug, a very early and primitive funicular railway that provided freight access to the upper courtyard of the castle. The line still exists, albeit in updated form, and is probably the oldest operational railway in the world. The current external bastions, begun in the 16th century and completed in the 17th, were added as a precaution because of fears of Turkish Invasion.

The only time that the fortress actually came under siege was during the German Peasants' War in 1525, when a group of miners, farmers and townspeople tried to oust Prince-Archbishop Matthäus Lang, but failed to take the castle. In 1612 the deposed Archbishop Wolf Dietrich von Raitenau died here in prison. During the Thirty Years' War, Archbishop Count Paris of Lodron strengthened the town's defenses, including Hohensalzburg. He added various parts to the fortress, such as the gunpowder stores and additional gatehouses. The fort was surrendered without a fight to French troops under General Jean Victor Marie Moreau during the Napoleonic War of the Second Coalition in 1800 and the last Prince-Archbishop Count Hieronymus von Colloredo fled to Vienna. In the 19th century, it was used as barracks, storage depot and dungeon before being abandoned as a military outpost in 1861.

Recent history:
Hohensalzburg castle was refurbished from the late 19th century onwards and became a major tourist attraction with the Festungsbahn cable car, opened in 1892, leading up from the town to the Hasengrabenbastei. It stands today as one of the best preserved castles in Europe. During the early 20th century it was used as a prison, holding Italian prisoners of war during World War I and Nazi activists (before the Anschluss with Germany) in the 1930s. Hohensalzburg castle was recently selected as main motif for the Austrian Nonnberg Abbey commemorative coin minted on April 5, 2006. This was the first coin of the series "Great Abbeys of Austria". It shows the Benedictine convent of Nonnberg Abbey. In the hilltop on the background, the castle and the Kajetaner church can be seen. Also in 1977 the Austrian Mint issued a coin for the 900th anniversary of Hohensalzburg castle.

Salzburg Bull:
The Krautturm (powder tower) houses a large aerophon of more than 200 pipes which is called the "Salzburg Bull" (Salzburger Stier). This huge mechanical organ was built in 1502 by Archbishop Leonhard von Keutschach. It was renewed by Rochus Egedacher in 1735. From Palm Sunday to 31 October the "Salzburg Bull" is played daily at 7, 11 and 18 o'clock. The aerophone thus initiated the playing of the carillon at the Residenzplatz and ended it again. One of Austria's most famous cabaret groups is named after it.

Golden Hall:
Starting in 1498, Archbishop Leonhard von Keutschach had the magnificent state apartments installed on the third floor. The rooms in which the archbishops would normally have lived were one floor below. The state apartments were primarily used for representative purposes and for festivities. The Golden Hall was richly decorated and indicates that the fortress served the archbishops not only as a refuge in times of crisis, but frequently also as a residence up to the 16th century. In order to gain more space, Archbishop Leonhard von Keutschach had four massive marble pillars constructed on the right-hand outer wall and had a loggia added on. As in the other rooms the ceiling is coffered, each coffer being adorned with gold buttons symbolising the stars in the sky. The 17 metre long beam, supporting the ceiling, is particularly worth mentioning. The coat of arms of Leonhard von Keutschach together with those of the Holy Roman Empire, the most powerful German towns and the bishoprics that were connected to Salzburg, are painted on it.

Chapel of Archbishop Leonhard von Keutschach:
Archbishop Leonhard von Keutschach (1495-1519) had the chapel built at a later time. One of the figure consoles in the beam ceiling had to be removed to make room for it. A richly ornamented star vault decorates the ceiling of the chapel. The inner part of the door at the entrance is covered with stucco. The painted frame shows red columns on a high plinth with grey capitals. The coat of arms of Salzburg and of Leonhard von Keutschach is reproduced in the tympanum beneath the mitre, legate cross and sword. A special feature of the coat of arms is the turnip and in many places in the fortress this can be found as an indication of prince-archbishop Keutschach's building activity. In the north wall of the chapel there are two openings which made it possible to attend the church service from the side room.

Golden Chamber:
The Golden Chamber is the most magnificently furnished room of the princely chambers. The two long walls are taken up by benches that are richly decorated with vines, grapes, foliage and animals. These benches used to be covered with cloth or leather, but the upholstery has not survived into the modern age. The walls also used to be covered in gold-embossed leather tapestry which adorned the lower part of the wall.

Bedchamber:
The bedchamber is the most intimate room of the princely chambers. The original furniture and precious textiles, such as tapestry, were in the course of time replaced by more "modern" ones. The elaborate wainscoting to keep out the cold still bears witness to the splendour of the past. The upper part of the panels is decorated with gilded buttons and rosettes, whereas the lower part, which is bare today, was probably covered with leather or velvet tapestry. The door conceals a toilet, which is basically a hole in the floor with a wooden frame. Back in the past this was a highly modern sanitary facility and was accessible from each floor.

Great Wall of China


Great Wall of China

Great Wall of China
The Great Wall of China is a series of fortifications made of stone, brick, tamped earth, wood, and other materials, generally built along an east-to-west line across the historical northern borders of China to protect the Chinese states and empires against the raids and invasions of the various nomadic groups of the Eurasian Steppe. Several walls were being built as early as the 7th century BCE; these, later joined together and made bigger and stronger, are now collectively referred to as the Great Wall.Especially famous is the wall built 220–206 BCE by Qin Shi Huang, the first Emperor of China. Little of that wall remains. Since then, the Great Wall has on and off been rebuilt, maintained, and enhanced; the majority of the existing wall is from the Ming Dynasty. Other purposes of the Great Wall have included border controls, allowing the imposition of duties on goods transported along the Silk Road, regulation or encouragement of trade and the control of immigration and emigration. Furthermore, the defensive characteristics of the Great Wall were enhanced by the construction of watch towers, troop barracks, garrison stations, signaling capabilities through the means of smoke or fire, and the fact that the path of the Great Wall also served as a transportation corridor.

The Great Wall stretches from Dandong in the east, to Lop Lake in the west, along an arc that roughly delineates the southern edge of Inner Mongolia. A comprehensive archaeological survey, using advanced technologies, has concluded that the Ming walls measure 8,850 km (5,500 mi). This is made up of 6,259 km (3,889 mi) sections of actual wall, 359 km (223 mi) of trenches and 2,232 km (1,387 mi) of natural defensive barriers such as hills and rivers. Another archaeological survey found that the entire wall with all of its branches measure out to be 21,196 km (13,171 mi).
Contents

History
The Chinese were already familiar with the techniques of wall-building by the time of the Spring and Autumn period between the 8th and 5th centuries BCE. During this time and the subsequent Warring States period, the states of Qin, Wei, Zhao, Qi, Yan, and Zhongshan[20][21] all constructed extensive fortifications to defend their own borders. Built to withstand the attack of small arms such as swords and spears, these walls were made mostly by stamping earth and gravel between board frames.
King Zheng of Qin conquered the last of his opponents and unified China as the First Emperor of the Qin dynasty ("Qin Shi Huang") in 221 BCE. Intending to impose centralized rule and prevent the resurgence of feudal lords, he ordered the destruction of the sections of the walls that divided his empire among the former states. To position the empire against the Xiongnu people from the north, however, he ordered the building of new walls to connect the remaining fortifications along the empire's northern frontier. Transporting the large quantity of materials required for construction was difficult, so builders always tried to use local resources. Stones from the mountains were used over mountain ranges, while rammed earth was used for construction in the plains. There are no surviving historical records indicating the exact length and course of the Qin walls. Most of the ancient walls have eroded away over the centuries, and very few sections remain today. The human cost of the construction is unknown, but it has been estimated by some authors that hundreds of thousands, if not up to a million, workers died building the Qin wall. Later, the Han, the Sui, and the Northern dynasties all repaired, rebuilt, or expanded sections of the Great Wall at great cost to defend themselves against northern invaders. The Tang and Song dynasties did not undertake any significant effort in the region. The Liao, Jin, and Yuan dynasties, who ruled Northern China throughout most of the 10th–13th centuries, constructed defensive walls in the 12th century but those were located much to the north of the Great Wall as we know it, within China's province of Inner Mongolia and in Mongolia itself.

The Great Wall concept was revived again under the Ming in the 14th century, and following the Ming army's defeat by the Oirats in the Battle of Tumu. The Ming had failed to gain a clear upper hand over the Mongolian tribes after successive battles, and the long-drawn conflict was taking a toll on the empire. The Ming adopted a new strategy to keep the nomadic tribes out by constructing walls along the northern border of China. Acknowledging the Mongol control established in the Ordos Desert, the wall followed the desert's southern edge instead of incorporating the bend of the Yellow River. Unlike the earlier fortifications, the Ming construction was stronger and more elaborate due to the use of bricks and stone instead of rammed earth. Up to 25,000 watchtowers are estimated to have been constructed on the wall. As Mongol raids continued periodically over the years, the Ming devoted considerable resources to repair and reinforce the walls. Sections near the Ming capital of Beijing were especially strong. Qi Jiguang between 1567 and 1570 also repaired and reinforced the wall, faced sections of the ram-earth wall with bricks and constructed 1,200 watchtowers from Shanhaiguan Pass to Changping to warn of approaching Mongol raiders. During the 1440s–1460s, the Ming also built a so-called "Liaodong Wall". Similar in function to the Great Wall (whose extension, in a sense, it was), but more basic in construction, the Liaodong Wall enclosed the agricultural heartland of the Liaodong province, protecting it against potential incursions by Jurched-Mongol Oriyanghan from the northwest and the Jianzhou Jurchens from the north. While stones and tiles were used in some parts of the Liaodong Wall, most of it was in fact simply an earth dike with moats on both sides.

Towards the end of the Ming, the Great Wall helped defend the empire against the Manchu invasions that began around 1600. Even after the loss of all of Liaodong, the Ming army held the heavily fortified Shanhai Pass, preventing the Manchus from conquering the Chinese heartland. The Manchus were finally able to cross the Great Wall in 1644, after Beijing had already fallen to Li Zicheng's rebels. Before this time, the Manchus had crossed the Great Wall multiple times to raid, but this time it was for conquest. The gates at Shanhai Pass were opened on May 25 by the commanding Ming general, Wu Sangui, who formed an alliance with the Manchus, hoping to use the Manchus to expel the rebels from Beijing. The Manchus quickly seized Beijing, and eventually defeated both the rebel-founded Shun dynasty and the remaining Ming resistance, establishing the Qing dynasty rule over all of China. Under Qing rule, China's borders extended beyond the walls and Mongolia was annexed into the empire, so constructions on the Great Wall were discontinued. On the other hand, the so-called Willow Palisade, following a line similar to that of the Ming Liaodong Wall, was constructed by the Qing rulers in Manchuria. Its purpose, however, was not defense but rather migration control.

Characteristics:
Before the use of bricks, the Great Wall was mainly built from rammed earth, stones, and wood. During the Ming, however, bricks were heavily used in many areas of the wall, as were materials such as tiles, lime, and stone. The size and weight of the bricks made them easier to work with than earth and stone, so construction quickened. Additionally, bricks could bear more weight and endure better than rammed earth. Stone can hold under its own weight better than brick, but is more difficult to use. Consequently, stones cut in rectangular shapes were used for the foundation, inner and outer brims, and gateways of the wall. Battlements line the uppermost portion of the vast majority of the wall, with defensive gaps a little over 30 cm (12 in) tall, and about 23 cm (9.1 in) wide. From the parapets, guards could survey the surrounding land. Communication between the army units along the length of the Great Wall, including the ability to call reinforcements and warn garrisons of enemy movements, was of high importance. Signal towers were built upon hill tops or other high points along the wall for their visibility. Wooden gates could be used as a trap against those going through. Barracks, stables, and armories were built near the wall's inner surface.

Condition:
While some portions north of Beijing and near tourist centers have been preserved and even extensively renovated, in many locations the Wall is in disrepair. Those parts might serve as a village playground or a source of stones to rebuild houses and roads. Sections of the Wall are also prone to graffiti and vandalism, while inscribed bricks were pilfered and sold on the market for up to 50 renminbi. Parts have been destroyed because the Wall is in the way of construction. A 2012 report by the State Administration of Cultural Heritage states that 22% of the Ming Great Wall has disappeared, while 1,961 kilometres (1,219 mi) of wall have vanished. More than 60 km (37 mi) of the wall in Gansu province may disappear in the next 20 years, due to erosion from sandstorms. In places, the height of the wall has been reduced from more than 5 metres (16 feet) to less than 2 metres (6.6 ft). Various square lookout towers that characterize the most famous images of the wall have disappeared. Many western sections of the wall are constructed from mud, rather than brick and stone, and thus are more susceptible to erosion.

Visibility from space (From the Moon)
One of the earliest known references to this myth appears in a letter written in 1754 by the English antiquary William Stukeley. Stukeley wrote that, "This mighty wall of four score miles in length (Hadrian's Wall) is only exceeded by the Chinese Wall, which makes a considerable figure upon the terrestrial globe, and may be discerned at the Moon." The claim was also mentioned by Henry Norman in 1895 where he states "besides its age it enjoys the reputation of being the only work of human hands on the globe visible from the Moon." The issue of "canals" on Mars was prominent in the late 19th century and may have led to the belief that long, thin objects were visible from space. The claim that the Great Wall is visible also appears in 1932's Ripley's Believe It or Not! strip and in Richard Halliburton's 1938 book Second Book of Marvels.

The claim the Great Wall is visible from space has been debunked many times, but is still ingrained in popular culture. The wall is a maximum 9.1 m (30 ft) wide, and is about the same color as the soil surrounding it. Based on the optics of resolving power (distance versus the width of the iris: a few millimeters for the human eye, meters for large telescopes) only an object of reasonable contrast to its surroundings which is 70 mi (110 km) or more in diameter (1 arc-minute) would be visible to the unaided eye from the Moon, whose average distance from Earth is 384,393 km (238,851 mi). The apparent width of the Great Wall from the Moon is the same as that of a human hair viewed from 3.2 kilometers (2 mi) away. To see the wall from the Moon would require spatial resolution 17,000 times better than normal (20/20) vision. Unsurprisingly, no lunar astronaut has ever claimed to have seen the Great Wall from the Moon.