Delingha City is located in the northwest of Qinghai Province, and is divided into Qilian Mountains and Qaidam Basin on the landform unit. The alien site is very famous in the local area. The site is located on the Baigong Mountain, east of Tosu Lake, around a cave. Outside the cave was scattered with iron pipes, iron pieces, and the cave had iron pipes of varying diameters into the mountain, closely in line with the rock, like the tube directly into the rock, the pipe was rusty brown. Outside the cave were all kinds of strange stones, which stood, some even in the lake beside them, and a series of mysterious symbols and unsolved letters on the rock formations of the sandstone.