* I've reverted an edit from Sbharris; which I assume was made with good intentions but did not improve the article.  Timeline already discussed and linked in article; no reason to think the population "disappeared" (as opposed to declined/left). Regarding link , I suggest you can find much better info about Chichen and the Ancient Maya at sites websites that are not also covering UFOs and the Shroud of Turin, and don't refer to the Maya peoples as "Mayans".  Interestingly, the webpage does link some good books; I recommend "The Maya" by Michael Coe as a good introduction and overview. Cheers,