Looking to take a trip to where something big happened? Try a visit to Mastodon State Historic Site. The historic site is home to the Kimmswick Bone Bed, one of the most extensive ice age fossil deposits in the country. Excavations at the site have yielded a number of bones, including remains of mastodons and giant ground sloths. Stone spear points from the Clovis culture (14,000-10,000 years ago) provided the first solid evidence of the coexistence of people and prehistoric beasts. The museum interprets the cultural and natural landscape of Missouri during the Pleistocene epoch. In addition to the museum, the historic site provides recreational opportunities such as three hiking trails and a picnic area.