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

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.’

A grisly discovery of charred bones, shoes and clothing at a suspected drug cartel training ground has prompted demands for answers and justice from relatives of the more than 100,000 people missing in Mexico.

Gruesome images from a ranch apparently used as a drug cartel training camp show hundreds of discarded items and skeletal remains.