Hi Roger, The Mayan pyramid sounds interesting. Thanks for posting. I had a problem with the link in your message. I did find the following:
<http://www.mont-acad.pvt.k12.al.us/projects/civ/beau/temp.html> I am still trying to picture how the "snake" image is produced. You did give a good account. Warren Thom Roger Bailey wrote: > A highlight of my recent trip to Mexico was the Mayan ruins at Chichen > Itza, in particular, El Castillo, the Temple of Kukulcan. This great > pyramid is designed to mark the yearly cycle of the sun. Each of the four > faces represents a season. Each of the four stairs has 91 steps, the number > of days in each of the four seasons. The temple at the top represents the
