Pros & cons
PROS
- Talus cave plus reservoir in a short, varied loop
- Multiple ways to experience the cave and loop for different comfort levels
CONS
- Cave closures can remove the marquee feature
- Tiny trailhead parking fills very early
Park at Bear Gulch Day Use Area or the small Moses Spring Trail parking near the Bear Gulch Nature Center; it fills quickly—arrive early. Shuttle service may run from overflow areas during busy times.
Cave is seasonally closed; bring a headlamp when open. Expect tight, dark, and slippery cave sections, uneven rocky footing, stone stairs, poison oak, stinging nettle, and possible rattlesnakes. Limited cell service; carry ample water.
Overview
This is the park’s classic short hike through Bear Gulch: a moderate loop that strings together talus caves, stone stairs, and the photogenic Bear Gulch Reservoir. Do it as the Moses Spring–Rim Trail loop (2.2 miles total, about 500 feet of gain, 1–1.5 hours) or a shorter out-and-back to the reservoir (about 1.2 miles, ~40 minutes). Either way, you get a lot of scenery for not much mileage.
What you’ll see
The headline here is Bear Gulch Cave—a talus cave formed by massive boulders wedged into a narrow gulch—plus sculpted volcanic rock and a tranquil reservoir capped by CCC-built stairways and bridges from the 1930s. Expect narrow, low sections in the cave, uneven rock underfoot, and some short scrambly bits. Portions of the gulch are pleasantly shaded; the Rim segment trades shade for broader views.
Route and options
From the Bear Gulch Day Use Area/Nature Center, follow Moses Spring up the gulch toward the cave, then continue to Bear Gulch Reservoir and return on the Rim Trail to complete the 2.2-mile loop. If you’re short on time (or if the cave is closed), the out-and-back to the reservoir keeps the effort light while still delivering the good stuff. Stronger hikers can use the reservoir as a springboard to longer days on High Peaks or North Chalone Peak.
Cave status and safety
Bear Gulch Cave opens and closes seasonally for bat protection; check status at the entrance stations before you commit. When open, a headlamp or flashlight is required—some sections are pitch black and can be slick. Bring plenty of water (plan roughly a liter per hour), wear sturdy footwear, and watch for poison oak, stinging nettle, and rattlesnakes. Cell service is spotty. This trail isn’t stroller- or wheelchair-friendly.
Logistics and crowd intel
Parking at the Moses Spring/Bear Gulch area is limited and fills quickly—arrive early, especially on weekends and holidays. There may be shuttle service from overflow areas at busy times, but don’t count on it. Dogs aren’t allowed on park trails. If solitude is your priority, start at sunrise or come midweek.
Best time to hike
Cooler months (late fall through spring) and early mornings are the sweet spot. The gulch offers pockets of shade, but exposed stretches can heat up fast. Morning light plays nicely on the red volcanic walls, and earlier starts dramatically reduce parking stress.
Elevation
2.2 mi · 1.3 hrWhere it starts
36.4812, -121.1805Wildlife on this trail
Near Moses Spring Trail
All places →All trails →
0 mi awayCondor Gulch to High Peaks LoopSpiny spires, condors, and cliffside stairs on a gutsy loopChallenging · 5.3 mi · 3.8 hr
0 mi awayHigh Peaks TrailSteep, airy ridges, carved steps, and eye-level condor views.Challenging · 6.7 mi · 4.5 hr
0 mi awayCondor Gulch TrailShort, steep climb to big High Peaks views and likely condors.Moderate · 2 mi · 1.2 hr
0 mi awayMoses Spring to Rim Trail LoopShort cave and reservoir loop with big payoff for little effortEasy · 2 mi · 1.2 hr
0 mi awayBear Gulch Nature CenterTrailhead hub with exhibits, film, water, and cave intelRestroom · Exhibit
0 mi awayBear Gulch Day Use AreaTrail hub to caves and reservoir with picnic comfortsTrailhead · Restroom
0.6 mi awayBear Gulch CaveA moody talus cave leading to a hidden reservoir and fallsParking · Restroom
0.6 mi awayMonolithStriking rock wall above Bear Gulch Reservoir and cavesTrailhead · Parking
