Julie Meachen, an expert in Ice Age megafauna, skirts a dirt ledge called “the Saddle” deep inside a remarkable hollow in northern Wyoming known as Natural Trap Cave. She stops to observe Megan ...

LOVELL — Falling 100 feet down into a dark cave is (almost) never a good thing. It is easy to imagine: a mountain lion sprinting after an antelope at 45 mph, both animals cresting a low rise. The ...