Content starts here

CLOSE ×

AARP Membership — $15 for your first year when you sign up for Automatic Renewal

Get instant access to members-only products and hundreds of discounts, a free second membership, and a subscription to AARP the Magazine.

Join Now

Renew Now

Volunteer with AARP Foundation Tax-Aide and Make a Difference in Your Community

Back to Things to Do

Mastodon State Historic Site

Name: Mastodon State Historic Site
Address: 1050 Charles J. Becker Drive, Imperial, MO, 63052, US

1050 Charles J. Becker Drive

Imperial, MO 63052

By clicking the links above, you'll leave AARP and go to a website that is not operated by AARP. A different privacy policy and terms of service will apply.

636-464-2976

Looking to take a trip to where something big happened? Try Mastodon State Historic Site. 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. Interpretative trails and picnic sites dot the landscape and a museum tells the natural and cultural story of the Clovis culture, which existed in the area between 10,000 and 14,000 years ago.

Please use "Flag This Place" to alert us about content that is inappropriate or needs immediate attention. Nothing you submit will be shared with other site visitors.

AARP Events for Imperial

Featured Event

Movies for Grownups: ‘Wicked: For Good’

Thursday, Dec 11, 2025 at 7:00 p.m. CT

Marcus Ronnie's Cinema

St. Louis, MO
Featured Event

Join AARP's Brunch Bunch on select Fridays

Friday, Dec 12, 2025 at 8:45 a.m. CT

Various Locations around St. Louis. Event will start at Shrewbury Metro Link Station

St. Louis, MO
Featured Event

Step Out with AARP and Walk with a Doc

Saturday, Dec 13, 2025 at 9:00 a.m. CT

Saint Louis Galleria Mall

St. Louis, MO