Stone formations cling to the ceiling and rise from the ground of a cave passageway.

Great Onyx Cave Tour

Mammoth Cave National Park

  • Every day at 9:15 AM from March 31, 2025 to April 06, 2025
  • Fees apply

Register

Advanced reservations are strongly recommended as tours often sell out.

A beautiful cave in its own right, Great Onyx Cave houses an abundance of beautiful geologic formations that sparkle in the lantern light of this tour. Visitors on this tour can see many stalactites, stalagmites, gypsum crystals, and helictites. This cave was also the site of very important cultural history in the early days of Kentucky cave tourism. This tour is ideal for people with an interest in cave tourism history and unusual rock formations. Please note: this tour is in Great Onyx Cave, which is separate from Mammoth Cave.  

This tour requires a short bus ride to and from the visitor center to the cave entrance.

Please Note: This cave is toured within Mammoth Cave National Park, but is not known to connect with the Mammoth Cave System.

Duration: 2.25 hours
Distance: 1 miles (1.6 km)
Total Stairs: 82
Difficulty: Moderate
Ages: Age 6 years and older. Individuals under 16 years of age must be accompanied by an adult age 18 years or older.
Restrooms: No
Tickets available for each tour time: 38

More information

Fees

$31 Adult, $26 Youth, $15.50 Senior Pass Holder, $15.50 Access Pass Holder

Location

This tour departs from the Mammoth Cave National Park Visitor Center.

Latitude and Longitude 37.187022, -86.101071

Schedule

Days:

Every day

Dates:

March 31, 2025 to April 06, 2025

Time:

9:15 AM

Duration:

2 hours and 15 minutes

Please arrive at least 30 minutes prior to your tour time.

Event Type

  • Guided Tour
Tags: mammoth cave, mammoth cave national park, cave tours, ranger-guided tour