which are more than two thousand years old, which are so wonderful that engineers in America and Europe do not know exactly how those buildings were erected. There is a particular temple on the top of a mountain; and that mountain is 6000 feet high. The ceiling over the center of the temple is a huge circular piece of marble; and that marble ceiling is so large that for a long time people in America and Europe did not know how it was dragged up to the top of the mountain, and then placed over the temple. But now we know that a team of trained elephants was used to do that.