those chinease pyramids are a crazy mystery. & it's crazy that they would cover them up with grass and trees instead of excavating those sites. in my opinion the ancient sites around the world don't belong to the countries that there in, instead they belong to the world and the human race. just like those "Giant Buddas" in afganistan that were destroyed by the taliban. no one has the right to destroy world history, especially when you consider that most of these countries didn't even exist when this stuff was built. They just happened to move in.