Meramec Caverns near Sullivan, Missouri is one of the most visited cave attractions in the United States, drawing visitors for more than 80 years to a five-level cave system carved through the dolomite limestone of the Ozark Plateau. The cavern extends more than four miles in total length, though the guided tour covers approximately one mile of the most dramatic formations. The cave was formed by the Meramec River, which still flows through a section of the lower cave accessible to visitors at high-water season. The tour's centerpiece is the Wine Room, a cathedral-like chamber of flowstone formations where Jesse James allegedly hid from law enforcement — a legend the cave has promoted since its commercialization in the 1930s. The Stage Curtain formation, a massive flowstone drapery resembling a theater curtain, is the most recognizable geological feature and serves as a backdrop for the cave's signature light show at tour's end. Throughout the tour, guides point out stalactites, stalagmites, cave coral, and rare aragonite formations visible in the cave's numerous chambers. The cave maintains a constant temperature of 60°F and nearly 100% humidity year-round, making it a welcome escape from Missouri summer heat. All tours are guide-led and depart approximately every 30 minutes; the walk involves some uneven terrain and a few low ceiling sections requiring visitors to duck. Children under 5 are admitted free. The property also includes canoe and kayak rentals on the Meramec River, a campground, and a motel, making it a potential base for multi-activity Ozark itineraries. The cave is located 60 miles southwest of St. Louis via I-44 and is a popular summer day-trip destination from the city.
Good to know
- Hours
- Daily; hours vary seasonally (typically 9am–5pm, extended in summer). Call (573) 468-2283 to confirm.
- Best time
- Weekdays, summer mornings before tour groups arrive; cave maintains 60°F year-round
Location
1135 MO-185, Sullivan, MO 63080
38.2317, -91.0685 View on map
Highlights
- Tour the Wine Room, a vast flowstone chamber linked to Jesse James outlaw legend and Ozark folklore
- See the Stage Curtain, a towering flowstone drapery formation used as backdrop for the cave's signature light show
- Walk through a mile of active cave formations including stalactites, stalagmites, cave coral, and aragonite
- Experience the Meramec River flowing through the lower cave, visible at certain water levels
- Combine the cave tour with canoe or kayak rental on the Meramec River for a full outdoor day
Tips for visiting
- Wear a light layer even in summer — the cave stays at 60°F with near-100% humidity and feels cold after outdoor heat
- Tours depart approximately every 30 minutes; arriving early on summer weekends avoids peak crowds when multiple tour groups overlap
- The cave involves some low ceiling sections — visitors over 6 feet tall should be aware of the need to duck in several passages
- Children under 5 are admitted free; the tour is generally suitable for children ages 4 and up who can walk independently
- Combine a morning cave tour with an afternoon canoe rental on the Meramec River for a complete Ozark day trip from St. Louis
- Confirm seasonal hours by phone at (573) 468-2283 before visiting, as opening times shift significantly from winter to summer
When to visit
Summer weekday mornings offer the best experience — early tours before 11am have fewer group visitors. The cave's 60°F temperature makes it a popular midsummer escape from Missouri heat. Spring and fall weekdays are also excellent choices with lighter crowds.
Accessibility
The Meramec Caverns tour path involves uneven limestone floors, several low ceiling sections, and steps at various points. The tour is not wheelchair accessible. Visitors with significant mobility limitations or difficulty walking uneven terrain should confirm current path conditions by calling the cave directly at (573) 468-2283 before purchasing tickets.
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Frequently asked questions
How long does a Meramec Caverns tour take?
The guided tour covers approximately one mile of cave and takes 60–80 minutes. Including travel to and from the parking area and time at the gift shop, allow 2 hours total.
Is Meramec Caverns suitable for young children?
Children 4 and older who can walk independently manage the tour well. Children under 5 are free. The cave is dark in sections, which some young children find frightening; guides use flashlights and lighting throughout the tour.
Is photography allowed inside the cave?
Personal photography is permitted throughout the tour, including the light show finale. Flash photography is allowed. Tripods are not practical given the paced group tour format. Video recording is also permitted for personal use.