The caramel-colored skull of an ancient cave bear is believed to be at least 60,000 years old, and it’s up for auction in Anchorage.
Image caption, This work of art was found in a cave at Cresswell Crags, Derbyshire. It was made around 12,000 years ago. The Stone Age artist used a sharp stone to scratch the outline of a horse ...
The Sac Actun cave system in Mexico’s Yucatán Peninsula ... including the bones of two long-extinct animals from the Ice Age: ...