David Kuijt (pronounced like Kite) who is best known in DBA
wargaming circles has posted the following page on how he constructed a model
Mayan Pyramid. He also has a page on constructing a smaller Aztec pyramid, and
lots of other neat stuff.
http://www.umiacs.umd.edu/~kuijt/dba105/Castillo/Castillo.html
Cheers,
--dave