The earliest revealed the ancient times of the East-West cultural exchanges of the classic site - the Sarawusu cultural site. So far, more than 600 cultural relics such as human fossils and stone tools have been found in Fanjiagou Bay, Yangsigou Bay and Milanggou Bay, which belong to the Saraousu Valley (of which more than 200 are preserved at the Natural Museum in Paris, France). The physical features of ancient humans found here belong to the late Homo sapiens in the history of human evolution, and their life dates from 1417,000 years ago. The stone tools found belong to the large system of "Zhoukoudian No. 1 Location (Beijing people) Yishi Yixuan", but have distinctive characteristics, so it is called Sarawusu Culture. The Sarawusu Desert Grand Canyon is located in Dagou Bay, Wudinghe Town, Wushenqi, with an altitude of 1300 meters. The Grand Canyon is composed of 8 Dagou Bay. The main valley is 34 kilometers long and has been washed by wind and rain. It is currently the largest desert Grand Canyon in China and belongs to a rare natural wonder of drylands. The beautiful Sarawusu River nine twists and turns, the water runs through the peaks, and the lush plants on both sides cover the river.