About Us Sources
Historic Entrance to Mammoth Cave Photo: Warren LeMay / Wikimedia Commons (CC BY-SA 2.0)
All Parks
Kentucky · Est. 1941
Park Map PDF

Mammoth Cave

The longest known cave system on Earth — over 420 surveyed miles and counting, beneath rolling Kentucky hill country and the Green River.

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Summary
💵
$0
Surface entrance fee
💧
Live
Green River gauge
📷
1 live
Camera
Historic Crowd Data
Avg. monthly visitors, 2015–2024 · National Park Service
Jan
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Light Moderate Busy Very Busy
Peak season is July, when around 17% of annual visitors arrive. For lighter crowds, aim for November–February.
Plan Your Visit
⚠️Cave & Trail SafetyUneven, wet trails
🕳️ Cave trails are uneven, often wet, and pass through sections with low ceilings and dim lighting — use handrails and stay on marked paths. Cave temperature holds steady at 54°F year-round, so bring a light jacket even in summer. On the surface, watch for ticks, poison ivy, and venomous copperheads and rattlesnakes along trails and near the Green River. Summer heat can exceed 90°F — carry water on any outdoor hike. Children under 16 must be supervised at all times on tours. NPS safety info ↗
🎟️Cave Tours & ReservationsBook ahead
📅 The surface and visitor center are free, but every cave tour requires a paid, timed ticket — advance reservations via Recreation.gov are strongly recommended, since popular tours sell out, especially in summer and around holidays. Ranger-led tours range from easy walk-throughs to strenuous crawling routes. NPS tour guide ↗
Tour Options$12 – $79
Discovery Tour
Self-guided, shortest and easiest — $12
Mammoth Passage Tour
Ranger-led, beginner-friendly — $15
Historic Tour
2 miles through the original 1816 route — $24
Grand Avenue Tour
4-mile, most extensive route offered — $42
Wild Cave Tour
Strenuous crawling/caving, age 16+ — $79
💧Green RiverLive USGS gauge
USGS Site 03309000 — Green River at Mammoth Cave, KY
Streamflow -- ft³/s
Gauge Height -- ft
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🥾Things to Do5 categories
Hiking Trails6 trails
Green River Bluffs Trail1.3 mi
Visitor Center area trail along the bluffs above the river
Echo River Springs Loop Trail1.0 mi
Wheelchair-accessible loop near the visitor center
Sinkhole Trail1.0 mi
Visitor Center area trail; partially closed — check current conditions
Cedar Sink Trail1.0 mi
South side trail off Mammoth Cave Parkway
Turnhole Bend Nature Trail0.5 mi
South side nature trail along the Green River
Sloan's Crossing Pond Walk0.4 mi
Wheelchair-accessible pond walk, south side
Canoeing, Kayaking & BoatingGreen & Nolin Rivers
Dennison Ferry → Green River Ferry7.6 mi · 2.5–4 hrs
Green River paddle route
Green River Ferry → Houchin Ferry12.4 mi · 4–6 hrs
Green River paddle route
Nolin Dam → Houchin Ferry11.1 mi · 4–6 hrs
Nolin River paddle route
Houchin Ferry → Brownsville3.6 mi · 1.5–2 hrs
Green River paddle route, exits the park
PFD RequirementMandatory ≤12
Required for all paddlers age 12 & under at all times on park rivers
Bicycling3 trails
Mammoth Cave Railroad Hike & Bike Trail9 mi
Former railroad grade linking Park City to the visitor center area
Big Hollow Trail Loop9.1 mi
Single-track mountain bike trail through woodlands & rocky terrain
Connector Trail1 mi
Links Big Hollow Trailhead to Maple Springs Trailhead
Horseback Riding60 mi network
Backcountry Horse Trails60 mi
Wide dirt paths to single-file ridgeline routes, north of the Green River
Trailer Parking5 trailheads
Five day-use trailheads: First Creek, Lincoln, Maple Springs, Temple Hill & Maple Springs Campground
Maple Springs CampgroundHorse camping
Four horse-specific campsites with picket areas
Guided RidesConcessioner
Available through authorized commercial outfitters such as Double J Riding Stables
Bird WatchingTop 5 species
Belted Kingfisher
Belted Kingfisher
Dives along the Green River
Wild Turkey
Wild Turkey
Roams the wooded hill country
Great Blue Heron
Great Blue Heron
Wades the Green & Nolin Rivers
Pileated Woodpecker
Pileated Woodpecker
Drums through the forest canopy
Barred Owl
Barred Owl
Calls at dusk near the cave entrances
🏕Camping3 campgrounds
Mammoth Cave CampgroundReservation
LocationNear the visitor center
Fee$25/night ($12.50 accessible/senior)
Houchin Ferry CampgroundReservation
LocationOn the Green River, quieter/remote
Fee$20/night ($10 accessible/senior)
Maple Springs Group CampgroundGroups only
Fee$50/night per group site
Full camping details on NPS.gov ↗
Refreshing in 60s
📞 Phone: (270) 758-2180  ·  Mailing Address: 1 Mammoth Cave Parkway, Mammoth Cave, KY 42259  ·  Official NPS contact page ↗
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