Sal Hollow is a primitive backcountry campsite in Mammoth Cave National Park accessible via hiking trails from either Lincoln Trailhead (6. 4 miles) or Maple Spring Trailhead (3. 9-7. 2 miles depending on route).

The site features only a fire ring and is located near the Green River, making it suitable for backpackers and paddlers seeking solitude; a $10 permit is required and can be reserved through Recreation. gov.