Camps Gulf Cave is located in Fall Creek Falls State Park in Van Buren County Tennessee.  The entrance to the cave is located on opposite side of the valley from the more popular Camps Gulf Cave. 
To get to the entrance; from Camps Gulf Cave continue up the dirt road past the old campsite. When you come to the fork in the road go left, within a very short distance (30 yards?) you will see a trail going through the woods on the left, follow the trail to the entrance about 100 yards away. The entrance is located in the bottom of a sink at the base of a 100 foot tall bluff.