Scientists reopened an underwater cave sealed for 40,000 years and immediately knew something was off. The ancient chamber, hidden beneath the depths, had remained untouched since the Ice Age.
In 2007, cave divers mapping underwater tunnels near Tulum, Mexico, found a large submerged chamber they named Hoyo Negro. The room, about 100 feet deep, contained scattered animal bones and a nearly complete human skeleton. The discovery led to years of research by the Mexican National Institute of Anthropology and History (INAH) and a team of international scientists.The human remains belonged t…