Meramec Caverns

About

Uncover Missouri’s buried treasure beneath the rolling hills of the Meramec Valley. Meramec Caverns, the largest commercial cave in the state and one of the most awe-inspiring caves on the planet, boasts astounding formations, including glistening stalactites, magnificent stalagmites, an ancient “wine table” and a seven-story “mansion,” which were formed from the erosion of large limestone deposits over millions of years. Trained rangers guide captivating tours along well-lit walkways to some of the rarest and largest cave formations in the world – they’ll also show you where an episode of Lassie was filmed in 1966. The underground oasis is a cool 60 degrees year-round, and you can supplement the spectacular experience with ziplining or a scenic excursion on the Meramec River aboard a canopy-topped riverboat. Guided walking tours depart every 20 to 30 minutes beginning at 9 a.m. The cavern tour takes one hour and 20 minutes, covering 1.25 miles.