Mormon Rocks: A Geological Marvel in San Bernardino
Mormon Rocks, located in San Bernardino County, California, is a striking point of interest featuring striking sandstone formations along the San Andreas Fault.
These formations are a geological and historical treasure, offering a glimpse into the region’s natural history and its role in westward expansion.
Visitors can explore the area via a short, scenic trail, enjoy panoramic views of Cajon Pass, rock climbing, and a chance to spot wildlife ranging from White-throated Swifts to coast-horned lizards.
Destination Details
| Season | Year-round, with cooler months (October-May) being ideal |
| Location | San Bernardino County, California |
| General GPS Coordinates | 34.3174227, -117.499288 |
| Management | U.S. Forest Service |
| Size | Approximately 1 square mile |
| State | California |
| Nearest Major City | San Bernardino, CA (about 20 miles away) |
| Information Number | 909-382-2851 (Front Country Ranger District) |
Getting to Mormon Rocks
Mormon Rocks is easily accessible from the Mormon Rocks Fire Station, located on Highway 138 just west of Interstate 15.
- From Los Angeles: Take I-15 north to Highway 138. Turn west on Highway 138, and the fire station will be visible along the road, where parking and the trailhead are located.
- From the High Desert: Take I-15 south to Highway 138 and follow the same directions.
The rocks are visible from the freeway as you pass through Cajon Pass, making them a prominent landmark for travelers.
Destination Overview
Situated along the San Andreas Fault, Mormon Rocks is a fascinating area of sandstone blocks that have been exposed to the elements over millennia due to tectonic activity. These formations rise dramatically from the chaparral-covered landscape, offering excellent opportunities for photography, hiking, and wildlife observation.
A one-mile loop trail constructed by the Forest Service in 1975 allows visitors to hike to a ridge for sweeping views of the Mormon Rocks and Cajon Pass. Hikers can spot unique geological features and wildlife along the trail, including hawks, ravens, and California Thrashers. Coast horned lizards often scurry along the sandy paths, adding to the area’s charm.
Historically, the Mormon Road of the 19th century passed through this valley, marking the journey of Mormon settlers from Salt Lake City to the Los Angeles Basin. Today, the area remains a bustling corridor, with the I-15 freeway, Historic Route 66, and a major train route cutting through Cajon Pass.
Visitors should be mindful of local wildlife, which includes rattlesnakes, bobcats, and even the occasional mountain lion. Proper precautions, such as keeping dogs leashed and avoiding wildlife interaction, are essential for a safe visit.
The area operates from 9:00 a.m. to 6:00 p.m., with no fees required for parking at the Mormon Rocks Fire Station. An interpretive brochure may be available at the trailhead or the Lytle Creek Ranger Station, enhancing the visitor experience with additional insights into the area’s history and geology.
