Moses Spring to Rim Trail Loop

This is the Bear Gulch circuit for a dark passage beneath wedged boulders, a small reservoir, and a return above the canyon. Start near Bear Gulch Nature Center, follow the connecting path to the Moses Spring trailhead, continue through the cave corridor toward Bear Gulch Reservoir, then circle back on the Rim Trail and High Peaks connector. Plan for about 2.2 miles, moderate effort, roughly 500 feet of climbing, and 1.5 to 2 hours with stops. The shorter walk to the reservoir and back is a different itinerary. The route line follows mapped paths and closes at the Nature Center access, but it measures about 1.8 miles; use posted junctions and treat the mileage as approximate.

The cave is made by large volcanic boulders jammed together in the narrow canyon, rather than by water dissolving limestone. A flashlight is required. The passage has low ceilings, steps, uneven rock and slippery surfaces, so watch your head and footing; it can feel tight and is not a good fit for anyone uncomfortable in confined spaces. The cave trail was developed in the 1930s, and the dark spaces shelter Townsend’s big-eared bats. Access changes seasonally to protect them, and rain or flooding can also prompt short closures. When the cave is closed, follow the signed Moses Spring bypass and check the current cave notice before setting out.

Moses Spring is a seep beside the route, with a ledge looking into a jumble of house-size boulders and up the canyon. The reservoir sits behind a dam in the same narrow gorge; pause for its still-water reflection, then stay on the designated path as the loop climbs away. These are small features in a rugged setting, so the short stops add texture without turning the hike into a long detour.

The Rim Trail gives the circuit its open view back across Bear Gulch and the surrounding pinnacles. It is exposed and has no shade, unlike portions of the creek-side approach. Expect rocky, uneven footing and stairs. There is no drinking water along the hiking trails; carry water for the full outing, and avoid the hottest part of a summer day. Poison oak and rattlesnakes occur in the park, so watch where you step and keep to the path.

The Moses Spring Parking Area is in Bear Gulch Day Use Area on the east side of the park; the Nature Center is connected by a signed footpath included in the mapped line. Do not park along the road. Dogs are not allowed on this trail; service animals are permitted. A park entrance fee applies, with no additional hiking fee or reservation required.