Onondaga Cave State Park

Park Information

Descend into the depths of Onondaga Cave State Park and drop into a world of wonder: towering stalagmites, dripping stalactites, and active flowstones help make the cave a National Natural Landmark and illustrate why Missouri is often called “The Cave State.” Visitors can take guided tours into the underground wonderland. But if you prefer the surface, the park’s Vilander Bluff Natural Area provides a panoramic view of the Meramec River. Easy access to the Meramec River allows visitors to canoe or fish in a bucolic setting.

Park Hours

The park is open year-round for camping and day use.

Onondaga Cave hours

Onondaga Cave tours 

  • Tours are offered April 12 through Oct. 18 at scheduled times throughout the day, depending on the season and available staffing. 
  • At a minimum, tours are offered every two hours from 10 a.m. to 4 p.m. and increase to several tours per day from Memorial Day through Labor Day. 
  • Please call 573-245-6576 for a definitive tour time schedule.

Cathedral Cave tours

  • Cathedral Cave will open for school group tours starting April 13 and public tours starting May 15.
  • May 15-24 and Sept. 1 - Oct. 18 - 1 p.m., Saturday; 10 a.m., Sunday
  • Memorial Day through Labor Day - 10 a.m. and 1 p.m., Saturday; 10 a.m., Sunday
  • Tours may be available by special arrangement.  Please call 573-245-6576 to speak to the park naturalist for more information.

Visitor Center hours

  • Summer Hours (On-Season)
    March - 9 a.m. to 5 p.m., Friday through Sunday
    April through October - 9 a.m. to 5 p.m., daily
  • Winter Hours (Off-Season)
    November through February - Closed

Store hours

  • Summer Hours (On-Season)
    March - 9 a.m. to 5 p.m., Friday through Sunday
    April through October - 9 a.m. to 5 p.m., daily
  • Winter Hours (Off-Season)
    November through February - Closed