Kids ages 4 to 13 get the best deal at this ancient graveyard where more than 100 mammoths died in a sinkhole about 26,000 years ago. Each summer, they can do a simulated bone dig within view of the real bones and archaeologists who continue to excavate them. The hour- to 90-minute long program includes a lesson in careful excavation and the chance to identify what they find. Because the program’s so popular, reservations are highly recommended. Younger children can excavate mammoth teeth (they look like upside-down sneakers) for free in a sandbox-like display at the visitor center.