Cave Spring Trail climbs onto the east slope of the Black Mountains of Mount Nutt Wilderness . The 0.8-mile (one way) trail ends at Cave Spring. The route is steep in places. Cave Spring, as its name implies, is located within a natural cave that provides water for wildlife and wild burros that inhabit the area. To gain access to the cave, you will need to duck beneath hackberry trees that guard the entrance. Looking east from the cave entrance treats you to a nice view of the surrounding Sacramento Valley and the Hualapai and Cerbat Mountains beyond. Volcanic ash and lava depositions have weathered over the eons to create interesting spires, caves, ledges and cubbyholes throughout this part of the Black Mountains. Keep your eyes open for wild burros that live in the area. Since this trail is located within wilderness, motor vehicles and mountain bikes are prohibited on the trail. Shade and drinking water are not available along the route. Use of the trail is most comfortable between the months of September and May, although early morning hiking during the summer can be pleasant as well.