Archaeologists in Puerto Rico surprised by discovery of Indian artifacts

U.S. and Puerto Rican archaeologists say they have uncovered what they believe to be one of the most important pre-Columbian sites found in the Caribbean, containing stones etched with ancient petroglyphs and graves that reveal unusual burial methods.

The stones at the site in southern Puerto Rico form a large plaza measuring some 130 feet by 160 feet (40 meters by 50 meters) that could have been used for ball games or ceremonial rites, said Aida Belen Rivera, director of the Puerto Rican Historic Conservation office.

The petroglyphs include the carving of a human figure with masculine features and frog legs. Archaeologists believe the site might belong to the Taino and pre-Taino cultures that inhabited the island before European colonization.