Mammoth Cave National Park

A ranger explains Mammoth Cave in the vast passage known as Broadway. Rotunda, one of the cave's largest rooms, is just ahead.
Rolling hills, deep river valleys, and the world's longest known cave system. Mammoth Cave National Park is home to thousands of years of human history and a rich diversity of plant and animal life, earning it the title of UNESCO World Heritage Site and International Biosphere Region.
Map showing location of park.
A man stands at a podium in an underground cave passageway while speaking to a group seated in front of him.
New U.S. Citizens sworn in at Mammoth Cave National Park
Mammoth Cave National Park and U.S. Citizen and Immigration Services welcomed twenty-nine new citizens of the United States during a naturalization ceremony held inside Mammoth Cave on Thursday, April 24.
A large rock covered in dirt and loose cables sits on the ground in front of a large ferry boat.
Green River Ferry navigational cable system damaged during flooding at Mammoth Cave National Park
Green River Ferry infrastructure in Mammoth Cave National Park sustained extensive damage to its navigational cables and support towers during last week’s historic flooding event. The vehicle ferry operation will be closed for several months until repairs are complete.
Two people wearing high visibility vests are shown from the waist down as they use tools to pick up litter from the ground.
Mammoth Cave National Park hosts volunteer clean-up for Earth Day and National Volunteer Week
Mammoth Cave National Park will host a volunteer cleanup event on Tuesday, Apr. 22 from 9 a.m. to 2 p.m. CDT in honor of Earth Day and National Volunteer Week.
A ferry boat carries a passenger vehicle across a swollen, muddy river.
Green River Ferry, Dennison Ferry, and Houchin Ferry Campground to temporarily close for high water
Due to anticipated high-water levels in the Green River, Mammoth Cave National Park will temporarily some river access areas and roads beginning Friday, Apr. 4.
People admire colorful wildflowers on tables with quilts displayed in the background.
Flowers all day. Stars all night. Mammoth Cave National Park hosts annual Wildflower Day and Star Party
Mammoth Cave National will host two special events to highlight the beauty of springtime and the outstanding dark sky features of our environment. The annual Wildflower Day celebration and a Mammoth Cave Star Party will both take place on Saturday, Apr. 12.
A cascade of water pours over a rock ledge. Green foliage is in the background.
Photo by NPS Photo/ Deb Spillman
A long staircase travels down a slope into the dark cave opening.
Photo by NPS Photo/ Thomas DiGiovannangelo
A long cave passage with an oval shape.
Photo by NPS Photo/ Thomas DiGiovannangelo
A small white church building with yellow flowers in the foreground.
Photo by NPS Photo/ Thomas DiGiovannangelo
A wooden boardwalk leads into the forest.
Photo by NPS Photo/ Thomas DiGiovannangelo
A view of a river valley with hills covered in trees. A blue sky with white clouds stands above.
Photo by NPS Photo/ Thomas DiGiovannangelo
A large stacked stone pillar reaches the flat ceiling containing signatures in a cave passage.
Photo by NPS Photo/ Jackie Wheet