United States Kentucky

Mammoth Cave

Vast subterranean system in the U.S., known as the world's longest cave with over 400 miles of explored passageways.

Tips from the community

Mammoth Cave National Park is currently open, including the visitor center, cave tours, outdoor areas, including hiking, biking, and equestrian trails, picnic shelters, and campgrounds, and lodging, concessions, and retail spaces. Mammoth Cave is open 24/7. Due to the COVID-19 pandemic, cave tour operations are continuing to be phased back. There is no fee to enter the park, but there are fees to tour the caves, which geologists estimate began forming around 10 million years ago. Mammoth Cave is in the Central Time Zone (GMT-5). Visitors coming from the north will cross the boundary from the Eastern Time zone (GMT-4) at the northern Hart County line. For up-to-date information on current conditions, visit these websites for information on roads, campgrounds, trail conditions, weather, ferry status, cave tour schedule, and a calendar of events and programs, including ranger-led programs.

tarahchieffi 2 years ago

UNESCO World Heritage credentials join with national park status to mark out the great Mammoth Cave as one of the largest underground tunnel systems in the world. It runs for a mega 400 miles through the subterrane of Kentucky, sprouting into hidden chambers and rooms and bottomless pits that are said to descend to the very center of the planet. The human history of the site is also enthralling, with tales of more than 5,000 years of habitation to unravel.

jrfrancis 3 years ago

The place that made me happy about no cell service - backcountry camping at Mammoth Cave National Park. We hiked in about 10 miles and camped for the night. Our friends told us it was close to water, but we ended up hiking through tall grass (and wondering how many snakes there were) and then shimmying down a steep dirt hill to get to said water.

tarahchieffi 3 years ago

Mammoth Cave is a world-renowned cave system located in Kentucky, United States that is a must-see for bucket-list adventurers. It offers a unique underground experience for visitors including guided tours, hiking, and spelunking. As the longest known cave system in the world, Mammoth Cave is home to impressive geological formations and ancient fossils.

seeker 1 year ago

Mammoth Cave Guides

Mammoth Cave Articles

  • Mammoth Cave National Park: The Complete Guide for 2023

    Mammoth Cave —the longest tunnel cave system in the world—formed over 10 million years ago, but it wasn’t designated as an official US national park until July 1, 1941. The cave earned its name for both the size of its massive caverns and its hundreds of miles of explorable passageways. Within the cave’s 412 miles […]