Ancient archaeological site facing pollution threat

YUCATAN PENINSULA, MEXICO —The world's largest underwater archaeological site could be under threat from pollution.

Speaking to British newspaper The Telegraph, archaeologist Guillermo de Anda said that the Sac Actun cave system in the Yucatan Peninsula maybe under threat from pollution and development. Many tourists use sinkholes the caves for snorkeling, The Telegraph reported.

Reuters reports researchers recently found a network of 248 sinkholes throughout the 216 mile system. They also discovered 9,000 year-old human remains, as well bones of a giant sloth and ancient elephant.

The discovery could help provide new information on the ancient Mayan civilization.