Turpan, an oasis city, is located at the southern foot of Bogda Peak and in the center of Turpan Depression. Because of the drastic 5,000-meter difference in height between the mountain tops and the bottom of the depression, the scenery too, varies greatly at different altitudes from perpetual snow at the summits to green oasis at the foot of the mountains. After a long journey from the desert, tourists are always fascinated by the extraordinary beauty of the depression with its snow-capped mountains, salt lake, and particularly the Flaming Mountains.