Mammoth Cave National Park
Kentucky, USA
Mammoth Cave National Park located in Kentucky was established in 1941. Characterized by its humid subtropical karst climate, the park features signature highlights such as 426+ miles of mapped underground passages, Historic Rotunda and Gothic Avenue subterranean chambers, Green River canoeing and kayaking routes. Entry fee: Park entrance is completely free; cave tours require purchased tickets reserved through Recreation.gov.. Best time to visit: Year-round (cave maintains constant 54°F interior temperature); October is ideal for vibrant autumn surface foliage..
Park Ecology & Landscape
Mammoth Cave National Park protects the subterranean wonderland of the Green River valley in central Kentucky. Designated a UNESCO World Heritage Site in 1981, the park preserves over 426 surveyed miles of subterranean passageways formed in thick Mississippian limestone. Above ground, the park offers over 80 miles of hiking and equestrian trails through hardwood forests, sinkholes, and scenic paddling along the Green and Nolin rivers.
Key Natural Highlights
- 426+ miles of mapped underground passages
- Historic Rotunda and Gothic Avenue subterranean chambers
- Green River canoeing and kayaking routes
- Karst topography sinkhole hiking trails
Explore Verified Trails in Mammoth Cave National Park
View detailed elevation maps and required permits.
Planning & Permits
Year-round (cave maintains constant 54°F interior temperature); October is ideal for vibrant autumn surface foliage.
Park entrance is completely free; cave tours require purchased tickets reserved through Recreation.gov.
Backcountry camping permits required for overnight stays on north side trails.