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Onondaga Cave State Park

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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 peaceful and scenic setting.

Park Hours

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

On the following days (actual or observed), staff will not be available and park buildings will be closed: Christmas Eve; Christmas Day; New Year’s Eve; New Year’s Day; Jan. 2, 2023; Martin Luther King Jr. Day; Lincoln’s Birthday; and Presidents Day. 

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

Onondaga Cave hours

2023 Onondaga Cave tours

  • Tours will start April 1 and be offered seven days a week through Sept. 15.
  • Tours can be reserved online on our reservation website or by visiting the park. For more information, contact the park at 573-245-6576.

2023 Cathedral Cave tours

  • Tours will be offered on weekends from Memorial Day through Labor Day.

Visitor Center hours

Summer Hours (On-Season)

  • April through October – 9 a.m. to 5 p.m., daily

Winter Hours (Off-Season)

  • November through March – Closed

Store hours

Summer Hours (On-Season)

  • April through October - 9 a.m. to 5 p.m., daily

Winter Hours (Off-Season)

  • November through March - Closed

Park Office hours

8 a.m. to 4 p.m., Monday through Friday, year-round