Mammoth Cave National Park

World's Longest Cave System

Established in 1941, Mammoth Cave National Park protects 52,830 acres of Kentucky wilderness, including the world's longest known cave system. With over 400 miles of surveyed passageways, the cave continues to yield new discoveries.

Beyond its remarkable underground world, the park preserves diverse surface ecosystems and thousands of years of human history. From ancient Native American artifacts to early cave exploration, Mammoth Cave tells stories of human interaction spanning millennia.

Quick Facts

Location

Kentucky

Established

1941

Size

52,830 acres

Annual Visitors

~600,000

Cave Length

400+ miles

Best Time to Visit

Year-round

Park Highlights

Historic Tour

Classic cave route.

Frozen Niagara

Spectacular formations.

Green River

Scenic waterway.

Cedar Sink

Unique karst window.

Gothic Avenue

Historic signatures.

River Styx

Underground waterway.

Popular Activities

  • Cave tours
  • Hiking
  • Camping
  • Canoeing
  • Horseback riding
  • Fishing
  • Biking
  • Photography

Essential Information

Weather & Climate

Cave stays 54°F year-round. Surface varies. Check conditions.

Lodging & Camping

Lodge and campgrounds available. View options.

Cave Tours

Reservations strongly recommended. Various options.

Transportation

Personal vehicle recommended. Limited shuttle service.

Accessibility

Several accessible tours and facilities. View the accessibility guide.

Getting There

Located in central Kentucky. 90 miles from Louisville.

Plan Your Visit

The park is open 24/7 year-round. Cave tours operate daily except December 25. Summer is busiest.

Visitor Center provides orientation and exhibits. Cave tours range from easy to challenging.

Entrance fees required for cave tours. Surface areas free. Advance tour reservations recommended.

Official Resources