KerrTexas
Timekeeper
Mystery solved.
Moz
I would like to know what brand of cell phone is being used that still works inside of a tunnel. THAT is a mystery all by itself.
The answer was already provided in the article linked in the first post by Servant X :
"....the mountain is actually an alien spaceship, which the Chinese authorities are trying to hide by placing a mountain over the top and a tunnel through the middle. "
There you go, now the mystery is solved.