Raymer Hollow is a backcountry campsite within Mammoth Cave National Park accessible via multiple hiking routes (3. 6–8. 5 miles depending on trailhead), featuring a tent pad and fire pit for primitive overnight camping.

The site requires a free or $10 backcountry permit (available through Recreation. gov) and offers a remote wilderness experience with no treated water—visitors must filter or boil water from nearby streams or the Green River.

This hike-in site is ideal for backpackers seeking solitude and is popular with those combining backcountry camping with paddling or exploring the park's extensive trail network.