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Onyx Mountain Caverns


category : Natural Attractions
Beautiful Onyx formations, huge dripstone formations, guided tours, woodland Indian cultural information, underground river, gift shop and rock shop. On the National Register of Historic Places.


Admission: Adults, $7.75; Children 5-12, $3.75
Hours: Year round
Address: 14705 PD 8541
Phone: 573-762-3341
Handicapped Accessible.

Come visit us in St. Robert, Missouri

Attractions and Upcoming Events

Things to do Natural Attractions near St. Robert, MO

Ozark Caverns

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Clifty Natural Bridge

Follow Hwy W 3.8 miles and park at the Conservation Dept. Sign on the left. Hike down to the creekbed and watch for the bridg...

Onyx Mountain Caverns

Beautiful Onyx formations, huge dripstone formations, guided tours, woodland Indian cultural information, underground river...

Miller Trail and Cave

Short but very steep trail. Wonderful valley view from the huge mouth of the cave. ADA ...

Frog Rock

It's a photo op! See the rock that looks likea frog overlooking the Waynesville Hill....