SAO PAULO (AP) ? Brazilian scientists say they have found signs of a huge underground river flowing far beneath the Amazon River.
Valiya Hamza of Brazil’s National Observatory says there are indications of a 3,700-mile (6,000-kilometer) long subterranean river located several thousand feet below the surface.
Hamza says the finding came from studying temperature variations at 241 inactive oil wells drilled in the 1970s and 1980s by Brazil’s state-run oil company.
Hamza says the thermal information allowed his team of researchers to identify the movement of water 13,100 feet (4,000 meters) under the Amazon River.