This Ancient Lemur Mass Grave Was Discovered in Flooded Caves

Spelunking and traditional cave diving are both a lot of fun. There is danger in scuba-diving flooded caves, but experienced explorers will tell you that the unique sights that can be found just beneath waves and stone are worth the risk. Such was the case for Ryan Dart, an Australian diver who made the paleontological discovery of a lifetime after stumbling upon a "treasure trove" of ancient and massive lemur bones.