The BBC's Will Grant visits the site believed to have been used by drug cartels to dispose of victims' remains.

Mexican police claimed they found weapons, vests, bullets and “two batches of thermally exposed skeletal remains.” It wasn’t, however, until the Warrior Searchers of Jalisco’s visit last week that the crematoriums were discovered.

Authorities are trying to figure out how many were killed at a Jalisco ranch that apparently was used as a cartel training camp. Some call it the ‘Mexican Auschwitz.’