Place closure
No recurring date-based closure of Clark Fork Trailhead is published. Seasonal Sonora Pass corridor and temporary emergency orders still control access.
Trailhead
Carson-Iceberg Wilderness, Stanislaus National Forest, California
Clark Fork Trailhead begins on Forest Service Trail 21E01; the Clark Fork River Trail reaches Iceberg Meadow and the Carson-Iceberg interior
Turn from Highway 108 onto Clark Fork Road and continue about 10 miles to the road end; the native-surface trailhead has limited parking and no facilities.
Seasonal access
No recurring date-based closure of Clark Fork Trailhead is published. Seasonal Sonora Pass corridor and temporary emergency orders still control access.
Seasonal Sonora Pass corridor: Use the signed Clark Fork Trailhead access in Carson-Iceberg Wilderness, Stanislaus National Forest, California. Highway 108 and its forest-road approaches are seasonal and can close for snow or fire. Verify the selected road, parking area, and permit-issuance instructions. Highway 108 and its trailhead spurs are typically closed by winter snow, with reopening controlled by conditions. Wilderness permit dates are an authorization rule, not a closure season.
Check Caltrans, Stanislaus alerts, and the selected forest road before travel; do not use the permit season as proof that the road is open.