Mastodon State Historic Site is located in Jefferson County, in Imperial Missouri. The entire 425-acre park is on the National Register of Historic Places because of the Kimmswick Bone Bed, a large deposit of Pleistocene fossils. The site's museum has a full-size replica of the mastodon skeleton that was found on the property.
Amenities: 425 acres of parkland, the Kimmswick Bone Bed, museum, a picnic area, several hiking and interpretive trails, and sites for special-use camping.
The three hiking trails located at Mastodon State Historic Site are as follows: the Wildflower Trail which is .5 mile long and is ranked a "3" in difficulty on a scale of 1 to 5 with 5 being the most difficult. The Limestone Hill Trail is 2.25 miles long and is a "4" in difficulty. The Spring Branch Trail is .75 mile long and is a "1" in difficulty.
The site grounds are open 8am to one-half hour after sunset, daily, year-round. The Museum has seasonal hours. See website for more information and current hours to visit the museum.
Mastodon State Historic Site
1050 Charles J. Becker Drive
Imperial, MO 63052