Disclaimer: Our visit was hosted, however, all opinions expressed in this article are completely ours and based on our own family’s unique experience.
The Visit Neighboring States Series
North of Arcadia Valley, just off I44 is an amazing underground cavern at Onondaga Cave State Park – Southeast Mo.
Tour this fantastic “living” wet cave that is always growing and changing, located 90 minutes from the town of Ironton.
This cave is easy to find if you don’t drive through Mark Twain National Forest. Skip the confusing, gravel backroads and travel north on HWY 21.
Stop and browse the quaint shops in Caledonia or find a neat geocache at the Post Office.
Order Tickets & Prepare
Cave tours are scheduled April – October. Check the website before making plans. Afternoon tours are slower with fewer large groups.

Before the Cave Tour
Enjoy a leisurely ten minute stroll down the paved trail, just left of the visitor center, to the natural spring and original cave entrance. The amount of water flowing out of the springs is hard to comprehend. It’s a serene area and worth the time to visit. My son was very excited to “discover” the original cave entrance. He spotted it on his own and it made him feel like an adventurer.
The Tour
The cave is entered through a special room in the visitor center. This room protects the cave from drying out. Before the start of the tour, visitors will watch a short video that enhances the cave experience.






It’s amazing to think about all the caves here in the United States. I am really glad we have the opportunity to visit caves like Onondaga.
Missouri has AMAZING state parks that you won’t want to miss! Check out Elephant Rocks State Park and Johnson’s Shut-Ins State Park.

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