Activities

  • Interpretive Programs

    School and group programs are available. Click here for more information.

  • hiking

    Three trails take you to the natural and cultural features of the site. Click here for more information.

  • picnicking

    Make use of the shady picnic sites and small shelter. Click here for more information.

  • Playground

    There is a playground in the picnic area.

Park information

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.

See video

Park Hours

Historic Site Grounds

  • 8 a.m. to one-half hour after sunset, daily, year-round

Historic Site Office

  • 9 a.m. to 4:30 p.m., Monday through Saturday
  • 12 p.m. to 4:30 p.m., Sunday
  • Please note there will be times when the office is temporarily closed while staff are working on the grounds. The office telephone is monitored for messages during office hours.

Museum hours

  • March 16 through Nov. 14
    9 a.m. - 4:30 p.m. Monday-Saturday
    12 p.m. - 4:30 p.m. Sunday (closed Easter Day)
  • Nov. 15 through March 15
    11 a.m. - 4 p.m. Monday
    Closed Tuesday-Thursday
    11 a.m. - 4 p.m. Friday and Saturday
    12 p.m. - 4 p.m. Sunday
    Closed New Year's, Thanksgiving and Christmas days