As Lake Tahoe Recedes, Divers Uncover a Horrifying Discovery

Nine feet of water doesn't sound like much. But when Lake Tahoe dropped nine feet during the worst drought in twelve hundred years, it didn't just expose a shoreline. It exposed something that had been locked at the bottom of America's most famous lake since before most people alive today were born. And what the divers found when they went in wasn't litter. It wasn't algae. It wasn't the kind of thing you photograph and post online. It was the kind of thing that makes a veteran underwater researcher surface, pull off his mask, and sit on the edge of the boat for a long time before he says a single word.