Grapevine Hills Trail

Grapevine Hills Trail is a 2.2-mile out-and-back from the Grapevine Hills trailhead to Balanced Rock and back. Allow about 1 to 2 hours. For roughly the first three quarters of a mile, the route rises gradually through a sandy wash. The payoff is a huge boulder balanced across two rock columns in the middle of a field of rounded stone. Most of the hike is straightforward; the last quarter mile is a steep, rough climb over bedrock and boulders, so this short outing has a demanding finish.

Follow the marked trail rather than cutting through the rocks. Directional arrows guide the way where the path enters the boulder field. The footing changes from sand and gravel to uneven exposed bedrock, then back down the same line. On the return, loose sand and gravel on the rocks make the descent particularly slippery. Give yourself time to move carefully over the final slope, especially if anyone in your group is uneasy on steep, irregular rock. The trailhead is reached by a rough dirt road; use a sturdy high-clearance vehicle, and follow the park's four-wheel-drive guidance for primitive roads.

The lower part weaves in and out of a broad sandy wash, with a gradual rise and open views of the surrounding hills. This section is the easiest walking, but the entire route is exposed to sun; the wash offers no shade. Its forgiving grade can make the distance feel deceptively easy before the terrain changes. The marked line gets more important as it approaches the rocks, where rounded boulders create several tempting ways through.

The final quarter mile leaves the easy wash and climbs steeply over rough bedrock into the formations. Sand and loose gravel lie on parts of the sloping rock, so the same section is more awkward on the way down. The park warns that rangers regularly respond to foot, leg and ankle injuries here. Stay with the directional arrows, take the descent slowly, and turn around before the climb if the rock no longer feels comfortable. This is a short hike by mileage, but the last section is not a smooth walk to a viewpoint.

The destination is a broad boulder resting across upright rock supports, surrounded by enormous rounded blocks. The opening beneath the boulder frames the desert valley and distant mountains; it is the signature view and natural photo stop. Grapevine Hills is an exposed laccolith, an igneous body revealed as softer surrounding rock eroded away. The rounded stone underfoot is part of the same formation, so the hike ends with a close look at the area's geology as well as the balanced boulder itself.

The dirt trailhead is about 6.5 miles down Grapevine Hills Road. A signed dirt lot holds roughly ten vehicles, with an information kiosk at the start. The road is very rough: the trail information calls for a sturdy high-clearance vehicle, and the park's general primitive-road guidance also requires true four-wheel drive. The lot is small, so this is not a good access point for a large vehicle or anyone who cannot manage the road surface.

There is no shade along the trail, and the walk crosses open desert rather than a sheltered canyon. The park recommends one liter of water per person for every planned hiking hour. Pets are prohibited on park trails. The park also warns that snakes may shelter in the shade beneath boulders, so watch around the rocks and do not reach into crevices.