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
636-464-2976
Mastodon State Historic Site Link
A Mastodon skeletal fossil-Mastodon State Historic Site Link
Kimmswick Bone Bed-now re-covered for protection for later digs Link
Informational Kiosk at the Kimmswick Bone Bed Link
Old quarry site in the park Link
Mastodon State Historic Site Link
The Museum at the Mastodon State Historic Site Link