1300 yr old mass grave discovered in Mexico

Some of the skulls discovered in a mass grave in southern Mexico, are seen in this photo released by Chiapas State Attorney General on March 11, 2012. The mass grave containing the remains of 167 people is approximately 1,300 years old, the Chiapas state prosecutor's office said in a statement, after authorities had originally thought the grave was only 50 years old. The grave was discovered in a cave on a remote ranch near the town of Frontera Comalapa, about 11 miles (18 km) from the Guatemalan border.

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