[NativeSon]

Work done by Christy Turner (ASU) indicates that cannibalism was present at Chaco

I've heard that thrown around but never any real evidence.

I wish these people would find something better to do than dig up my ancestors...

[Publius]

There was a show about this on the Discovery Channel. The presence of chemicals unique to human meat was found in coprolites -- fossilized dung -- taken from Chaco.