Cauldrons in the Death Valley

[guohua]

I heard about these alien domes in Siberia many years ago, so I investigated best I could on line, then ask help from some friends I have in Siberia who have helped me many times before. They came back with the same answer I had got. Its a 100% made up.

I found a lot of evidence for it, not just the videos above.
There are pictures drawn on animal hides of the people in that area walking into those domes like structures and folk tales of they seeing giants in those Cauldrons.
But, like you said, it could all very well be made up.