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, as well as temporary trail closures, click here to 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: Thanksgiving Day; Nov. 29, 2024; Christmas Eve; Christmas Day; New Year’s Eve; New Year’s Day; 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

2024 Onondaga Cave tours

  • Tours will be offered daily, April 1 through Oct. 31. The last tour of the day begins at 3:30 p.m.
  • Tours can be reserved online on our reservation website or by visiting the park. For more information, contact the park at 573-245-6576.

2024 Cathedral Cave tours

  • Tours will be offered Saturday and Sunday, Memorial Day weekend through Labor Day weekend. 
  • Tours can be reserved online on our reservation website or by visiting the park. For more information, contact the park at 573-245-6576.

Visitor Center hours

April through October

9 a.m. to 5 p.m. daily

November through March

Closed

Store hours

April through October

9 a.m. to 5 p.m. daily

November through March

Closed

Park Office hours

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