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 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.
Trees surround a roadway divided by orange cones with vehicles and law enforcement patrol vehicles parked along the roadside. Officers wearing NPS uniforms approach a parked vehicle.
Sobriety and Safety Checkpoints at Mammoth Cave
Mammoth Cave National Park law enforcement officers will conduct periodic sobriety and safety checkpoints on park roadways and riverways for the remainder of 2025.
Two park rangers examine a stone wall near a roadway.
One Day Closure of Flint Ridge Road for Historic Wall Repairs
A portion of Flint Ridge Road between Mammoth Cave Parkway and Mammoth Cave Baptist Church will temporarily close on Tuesday, Mar. 11.
Illustration of an ancient underwater scene
Fossil Research Identifies New Shark Species at Mammoth Cave National Park
A new-to-science species of ancient shark has been discovered through an ongoing Paleontological Resource Inventory (PRI) at Mammoth Cave National Park.
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