COVID-19 Travel Information

Mastodon State Historic Site

Site excavations have established that Paleo-Indians hunted the American mastodon here during the ice age. The site is the home of the Kimmswick Bone Bed, one of the most famous and extensive Pleistocene ice age deposits of fossils, including a number of bones of giant mastodons.

The museum displays artifacts, fossils and a replica of a mastodon skeleton, and outlines the story of the Clovis culture, which existed in the area between 10,000 and 14,000 years ago.

Open for day use, the site offers picnicking and hiking.

The grounds are free; see museum fees on the website.

Located 20 miles south of St. Louis, off I-55, at Exit 186.

TripAdvisor Traveler Rating (79 Reviews)


Check website for details
1050 Charles J. Becker Drive
Imperial, MO 63052

Additional Information

Open Year-round
This Facility Is On The National Register Of Historic Places
ADA Fully Compliant
Smoking Allowed Outdoors Only
All Ages
Service Animals Welcome
Pets On Leash Allowed
Pets Allowed Outdoors On A Leash
Less Than $10
Personal Check
Group Discount
Advance Contact Required
Biking / Walking Trails

Free Travel Guide

Order your 2021 Official Missouri Travel Guide and start planning your #MissouriAdventure today.

Order Now