Tight Hollow is a narrow ravine on a tributary of Mill Creek in the Red River Gorge. The mixed mesophytic forest is home to some magnificent and very old tulip trees. The oldest tree documented in Tight Hollow thus far (pictured at left) is hollow, but still has 402 growth rings in the outer 15 inches. Work is currently being done to date more of the trees. The forest also has numerous hemlocks, magnolias, black birch, chestnut oaks and other species. Access to Tight Hollow is difficult. While the ravine itself is in the Daniel Boone National Forest, permission to cross private land is necessary. Once there, you'll most likely need to rappel to get in. An old stairway down a cliff face is still present, though rotting and dangerous to use.
The area is also full of numerous large, dead white pine. Some are standing and others are on the ground. Along with the steep slopes and abundant rhododendron, this makes getting around the hollow extremely difficult and time-consuming.
In 2010 hemlock wooly adelgid was found in Tight Hollow, and while some hemlocks have been treated by the Forest Service, some of the oldest hemlocks have been left due to the near impassible terrain and rhododendron thickets.