Bear Gulch Reservoir - Cave Trail - Moses Spring - Bear Gulch hike Pinnacles National Monument trail Pinnacles National Park

The short interesting hike to Bear Gulch Reservoir ascends a beautiful boulder-filled gorge on the east side of Pinnacles National Park (known as Pinnacles National Monument prior to 2013). A split in the trail offers two parallel routes to reach the reservoir. Bear Gulch Cave Trail climbs through a talus cave, while Moses Spring Trail takes a scenic but less daring course along the rim of the gorge. The trails reunite and arrive at Bear Gulch Reservoir, 3/4 of a mile from the start.

Cave Trail closes periodically to accommodate the bats that reside there. When Bear Gulch Cave is open, it should not be missed.

The 1.5-mile hike up and down Bear Gulch has 275 feet of elevation change. From the reservoir, Rim Trail heads north above the gorge connecting to High Peaks Trail. This provides an alternative return route for a 1.65-mile hike, and these trails can also be used to include Bear Gulch in a grander trek in Pinnacles National Park, the High Peaks Trail – Condor Gulch Loop.

Begin hiking south from the Bear Gulch Day Use Area. After 0.2 miles, take the left split, following the sign for Moses Spring Trail, Cave, and Reservoir. To the right, High Peaks Trail heads west up the side of Bear Gulch to a junction with the Rim Trail, before pushing on to the Pinnacles above. Our single track continues south up the east side of Bear Gulch, passing through a riparian forest that is lush, ferny, and mossy. Impressive boulders decorate the trail, making this a popular alley with mountain climbers. Signs mark several climbing stations along the way.

Bear Gulch Trail Pinnacles National Monument
The trail up Bear Gulch

Pass through a short tunnel and arrive at the Moses Spring Trail – Cave Trail split. Both trails are about 1/6 of a mile long and reunite just below the reservoir. Those hiking the 1.5-mile out-and-back to the reservoir can simply hike up one trail and come down the other. The trails are equally enjoyable in both directions.

Hikers not traveling out and back on these trails, and continuing up to the High Peaks, should make a point to hike through the cave if it is open. Moses Spring Trail is desirable as well, so If you are willing to add an extra 0.25 miles to your trek, you could hike up Moses Spring Trail to the connection above Cave Trail, descend to the bottom of the cave, and then turn around and hike back up. The cave trail is an experience you will not mind repeating.

Bear Gulch Cave Pinnacles National Monument
The trail up to the cave

Moses Spring Trail heads right from the junction, ascending to Moses Spring, where water seeps down the stone wall to a hidden pool. The trail pushes south across a ledge on the west wall of Bear Gulch. Nice views up and down the canyon include a great perspective of the house-sized boulders enclosing the cave. The trail passes over these rocks, meeting the top of Lower Bear Gulch Cave Trail, before continuing up to the reservoir.

Bear Gulch Moses Spring Trail Pinnacles National Monument
Moses Spring Trail crosses a ledge above the cave

Bear Gulch Trail is level and straight leaving the lower junction, crossing the floor of Bear Gulch through tall rocks at the entrance of a talus cave. Use a flashlight and step inside this narrow section of the canyon covered by collapsed boulders. Railings and steps put in place by the CCC in the 1930s provide an adventurous hike. A few shafts of light slip through the boulder ceiling, but other areas are pitch black. Bear Gulch Creek shares the cave, tumbling over rocks, and adding a rich sound to the dark passageway. Follow the trail up steps and across metal scaffolding to progress out of the talus cave and back into the daylight.

Bear Gulch Cave Trail Pinnacles National Monument
The bottom of Bear Gulch Cave

Bear Gulch Cave is home to a colony of Townsend’s big-eared bats. In order to protect their habitat, the park closes areas of the cave throughout the year. A short upper section of the cave is more often closed than the Lower Cave Trail. Call a ranger or check the Pinnacles National Park website for cave closure information.

Above the Cave Trail – Moses Spring Trail reunion, the hike continues through 0.15 miles of boulders to Bear Gulch Reservoir. Take the stone steps up the back of the dam to reach the reflective pool. This is a great place to take a break and have a snack. Chalone Peak Trail crosses the east bank of the murky-watered reservoir en route to South Chalone Peak, 4.5-miles away. Walk a short ways on this trail to experience the reservoir from a few different angles.

Bear Gulch Reservoir Pinnacles National Park
Bear Gulch Reservoir

After taking it in, head back down Bear Gulch for a 1.5-mile round trip hike. Alternatively, head north on Rim Trail above the west side of Bear Gulch, hiking 0.4 miles to a T-junction with High Peaks Trail where you can turn right and descend 0.3 miles down into Bear Gulch, 0.2 miles from the trailhead. Of course High Peaks Trail can also be used to reach the top of the Pinnacles. Cross the high peaks and descend Condor Gulch Trail to return to the trailhead for a 6-mile loop.

However you choose to hike to and from Bear Gulch Reservoir, the trek will be a memorable one. All trail junctions are clearly marked, and the surrounding landscape is unique and exciting. No permit is required to hike to Bear Gulch Reservoir. Pinnacles National Park has an entrance fee ($20 as of 2017). National Park Service passes may be used in place of the fee to gain entry. Dogs and bikes are prohibited on this loop.

To get to the trailhead: Take Highway 101 north to King City and exit onto First Street (exit 281). Turn right at the end of the ramp, heading north on First Street for 1.3 miles. The road makes a sharp right turn and becomes Lyons Street/Country Road G13. Take G13 out of the city, northeast for 14.3 to a T-junction with Route 25. Turn left and drive 14.2 miles to an intersection with Route 146. Turn left onto Route 146, following signs for Pinnacles National Park. Drive west into the park, passing the general store and campground on the left to reach the East Entrance Station after 2.5 miles. Pay the entry and proceed another 1.3 miles to the only real intersection on the park road. Make a left and drive south for another 1.4 miles to the Bear Gulch Day Use Area at road’s end.

Trailhead address: Pinnacles National Park, Paicines, CA 95043
Trailhead coordinates: 36.4785, -121.1838 (36° 28′ 42.6″N 121° 11′ 02″W)

Trail Map
View Pinnacles National Park in a larger map
Elevation Profile
Click or hover over any spot on this elevation profile to see the distance from the start and elevation above sea level at that location, which will be highlighted on the map.

You may also view a regional map of surrounding Central Coast trails and campgrounds.


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These photos were taken in December of 2010. Click to enlarge.
Nearby Trails
Pinnacles National Park High Peaks Trail High Peaks - Condor Gulch Loop
This 5.3 to 6-mile loop crosses the roof of Pinnacles National Park on an incredible trail.
High Peaks Balconies Cave Loop Pinnacles National Park High Peaks - Balconies Cave Loop
This extensive 9-mile loop ventures between the east and west sides of Pinnacles National Park, crossing through the High Peaks and Balconies Cave.
Pinnacles National Park Balconies Cave Balconies Cave
This 2 to 2.4-mile hike venture down Balconies Trail past impressive rock formations and through a fun talus cave, starting from Chaparral Trailhead on the west side of Pinnacles National Park.
California Central Coast Trail More Central Coast Hikes
Explore other destinations along the California coast between Ventura and Monterey, including trails in Los Padres National Forest.
Nearby Camping
Pinnacles National Park Campground Pinnacles Campground
Pinnacles National Park has one campground with tent, RV, and group sites in an oak woodland on the east side of the park.
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Tagged with · Caves · Creeks · Lakes · National Parks · Paicines
Distance: 1.5 miles · Elevation change: 275 feet

18 Comments on Bear Gulch Cave Trail and Moses Spring Trail to Bear Gulch Reservoir in Pinnacles National Park

  1. I can’t find any information regarding pets on trails. Can you please advise. Thanks!

    • hikespeak wrote:

      Dogs are not allowed on any trails within Pinnacles National Monument

  2. Also, are the distances shown for one-way or total lenght (out and back)? Thanks!!

    • hikespeak wrote:

      Hi Brian,
      Distances are shown as one-way unless noted as being round trip.

  3. Jasper wrote:

    Is swimming allowed in the reservoir? Are there other swimming holes in the area?

    • hikespeak wrote:

      I believe there is no swimming in the the reservoir. You can get sprayed a bit on the hike up though!

  4. Bill wrote:

    I’m headed up there this spring with the family with my son who loves fishing. Do you know if fishing is allowed in the resevior and what types of fish is in the resevior? Thanks.

  5. Rowland wrote:

    My honey & I really enjoyed the unique landscape of Pinnacles and want to spend more time there on our next trip!

  6. Sharon wrote:

    What was the purpose of Bear Gulch reservoir and why is the water so brown? Nice hike up and March is a good month to visit. Thanks

  7. […] and even has trails specifically to rock climbing areas. The trails are well maintained and the Bear Gulch Reservoir trail is absolutely fantastic. It’s an easy 1.5 mile round trip hike. It’s a loop trail […]

  8. Mark Anderson wrote:

    My son and I want to try a 2-night backpack trip in the Pinnacles in March. Other than Bear Gulch Reservoir, are there reliable water sources along the trails, and are there any areas particularly good to camp along the way? Can we camp wherever we wish? Thank you for your reply, Mark.

  9. LongBeachSandy wrote:

    I am looking for information about parking at the Bear Gulch Day Use Area. Could we park a motorhome there while hiking the Bear Gulch Cave Trail?

  10. Janice wrote:

    Can I hike to the reservoir from the west entrance? If so, how many miles is it to get there?

  11. Alfredo Reveles wrote:

    Is there anywhere to fish? ?

  12. David wrote:

    So is there any lodging near by, or camp grounds.

  13. Antany Khamphay wrote:

    Can you fish here?

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