at Mastodon State Historic Site

To reserve this shelter, visit our reservation page, or contact the historic site to check for availability by calling 636-464-2976.

picnic shelter

Shelter Amenities
  • Eight picnic tables
  • One grill
  • Maximum occupancy: 80
  • Distance to creek: 300 yards
  • Distance to playground: 50 feet
  • Distance to restrooms: 150 yards

For more information about the historic site's picnic area, click here.

Park Hours


38.379444, -90.395000

Park Hours

For temporary closures related to weather, stewardship activities and maintenance, visit our Park and Site Status Map.

Historic Site Grounds

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

Museum hours

  • March 16 through Nov. 15
    9 a.m. to noon and 1 p.m. to 4 p.m., Wednesday through Saturday (closed noon to 1 p.m. for cleaning)
    Noon to 4 p.m., Sunday (closed Easter Sunday)
    Closed Monday and Tuesday
  • Nov. 16 through March 15
    11 a.m. to 4 p.m., Friday and Saturday
    Noon to 4 p.m., Sunday
    Closed Monday through Thursday
    Closed Thanksgiving, the day after Thanksgiving, and Christmas and New Year's days
Historic Site Office Hours
  • 9 a.m. to 4:30 p.m., Monday through Saturday
  • Noon 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.