Pillar is a trail on the western side of the Camp 5 system composed of trail numbers 8041 and 8040. It can be accessed by taking the north entrance to Camp 5 from Boulder Canyon and taking Lost Gulch until meeting the start of 8041.
8041 is mostly rough dirt with some mild ruts. Near the start of 8040, it is possible to see the Black Hills through the trees. 8041 has a spur to the northwest; however, this spur has little to see and offers no exciting terrain. 8040 starts with the same rough dirt but soon turns rocky, with 6-10" tall embedded rock. The trail gets steeper, reaching 12-14 degrees as the rock becomes loose and 4-wheel drive becomes necessary.
Pillar 8040 offers one pull-out large enough for a vehicle or two to set up a small camp. This trail ends when it meets up with Lost Gulch Branch 1H.