Aliens' Ruins

　　Introduction     The Aliens' Ruins are located about 100 kilometers southwest of Delingha and are very famous locally. The site is situated on Bai Gong Mountain, east of Tosu Lake, around a cave. Scattered around the cave are objects resembling iron pipes and iron sheets. Inside the cave, iron pipes of varying diameters penetrate the mountain and fit tightly into the rock, as if the pipes were directly inserted into it. The pipes are a rust-brown color. Outside the cave, there are also various oddly shaped stones, some standing upright and others even in the nearby lake.

　　    Local authorities sent some pipe fragments to a non-ferrous metals group for testing. The results showed that the iron oxide content was over 30%, and the levels of silicon dioxide and calcium oxide were also quite high, indicating that the fragments are very old. Most intriguingly, some elements could not be identified at all, which adds to the mystery of the Aliens' Ruins.

　　 Delingha, Qinghai