National Park
Mammoth Cave National Park
Regulations on 31 October 2026
Signs at the site and later resolutions prevail; check the source.
These hold everywhere inside the boundary, whether or not a site is marked.
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Permit required
Caving · All year
In force on 31 October 2026
(b)(1) Cave entry. Except for those portions of the caves open to the general public, no person shall enter any cave within the boundaries of the park without first obtaining a permit from the Superintendent.
Published by National Park Service · 36 CFR § 7.36 Mammoth Cave National Park