Badlands National Park is a vast wilderness of jagged buttes, spires and pinnacles, mixed-grass prairies, and the world’s richest trove of fossils from the Oligocene epoch, estimated at 23 to 35 ...

Badlands National Park is full of geological oddities, but the 1.5-mile-round-trip Notch Trail is one of the best treks in the South Dakota park. There's something distinctly eerie about the Badlands.