Where is Ya Dan?

Ya Dan is a famous scenic spot in Urumqi's cultural landscape.

Ya Dan, also known as Yaldang, is the name of steep mountain and steep wall in Uygur language. This kind of terrain is the most typical and widely distributed in Luomian area of Ya Dan.

The most spectacular is Longcheng, which is located in the northeast of the ancient lake basin in Lop Nur. It is the area with the strongest wind erosion. The mound is as high as a city palace and looks like a lying dragon. The huge mound platform is as high as 12 to 20 meters, and the side wall is steep, making it extremely difficult to climb. Water bedding can be clearly seen from the cross section of the side wall; The lower part is an interbedded layer of silty sand and thick gray-green sand, and the top part is a reddish silty clay layer, which is cemented very hard by calcium carbonate to form a protective layer, making the top surface of the mound very flat.

The buildings in Longcheng are colorful: some are castles, dignified and dignified; Some are like city walls, with dragons and tigers crouching; Some are like tall buildings, standing tall. The wide wind-eroded depressions distributed between these grotesque landforms are like streets and lanes, deep and quiet, full of fun. Being in Dragon City, I feel that the Dragon City in front of me is not an ancient city, but it is better than the ancient city, which can be confused with reality.

Xinjiang in China has a vast territory, surrounded by mountains and surrounded by Oyamaguchi on both sides. Cold air from the Atlantic Ocean and the Arctic Ocean flows through the mountain pass into northern Xinjiang, and then bypasses the East Tianshan Mountains and enters the Tarim Basin, causing long-term regional gale along the way. The wind in Xinjiang lasts for a long time (up to 100 days a year), with wide distribution and strong wind, so we often hear the news of cold air coming from Xinjiang in the weather forecast.

Introduction to Ya Dan's story:

Legend has it that in the distant years, there was a country near Lop Nur, where people were naked and didn't have enough to eat, but the king lived in luxury. When the Jade Emperor learned of this, he pretended to be a monk and descended to the world to "beg for alms". The fatuous king only gave a little salt, and the jade emperor was furious and adjusted the salt water, which flooded the whole country. The water receded and the Dragon City appeared.

During the Yuan Dynasty, Italian traveler Kyle Poirot visited Lop Nur. He wrote in his notes: "There are sand hills and Isaiah skirts along the way, and there is no food to find. Pedestrians ride at night and smell ghosts. " Whenever the moon is white and the wind is clear, camping in the "Dragon City" feels that the scenery in front of me is not an ancient city, but better than it.

Wind erosion hills are distributed in the northern part of Rob Desert, which covers an area of about 2,600 square kilometers. Because it is windy all the year round in Lop Nur, there are many ditches under the earth platform. Tutai is changing various postures, sometimes like a huge fleet, sometimes like countless whales, spinning and dancing in the sand, sometimes like pavilions, and sometimes like castles in ancient cities. Surrounded by the intricate and profound terracotta warriors and horses, there are mysterious, strange and weird pavilions everywhere, which makes people think and linger.

Reference to the above content: Baidu Encyclopedia-Korla Ya Dan