Here's a part of the Red Legacy in China I bet gets a lot of play at the Harvard conference. Look at this picture and guess what it is. Go ahead, click on it to enlarge, take a good look.
Okay, what is it?
Funeral urns for giants?
Pots to grow giant redwood trees in?
Here are a couple more.
Aha!, a granary?
A sand igloo?
Some mosque in the middle of the desert?