Date: Nov 28, 2012 10:03 PM
Author: Milo Gardner
Subject: Re: On the Mayan Ethno-mathematics of Divination:Debunking the Astronomical Dec

The Mayan hoax was debunked about 6 months ago by four super-numbers recorded on a wall near Tikal, Guatemala. 

http://planetmath.org/encyclopedia/MayanSuperNumberArithmetic.html

The four long count numbers were written on the wall around 419 AD with calendar dates going several thousand years last 12/21/2012.