A Ziggurat is a stepped man made "mountain" using mudbricks with a temple on the top.
Ziggurats look like a truncated pyramid with layers that form steps. They were first built in Mesopotamia, but are also found in may other parts of the world. The native peoples of South America invented and built ziggurats that are strikingly similar to those of the Middle East, even though it is believed that the two cultures never communicated with each other.
- The Earth and Its Peoples A Global History, Bulliet et al, 2005