Bureau of Land Management, California.
Private property surrounds Stockdale Mountain. Do not enter through private gates or fences. Access to the public lands at Stockdale Mountain is only by foot at the BLM Access Point and parking/staging area located at the north end (dead-end) of Slacks Canyon Road. Do not stop and trespass onto private property while on Slacks Canyon Road. There is no access to public lands at Stockdale Mountain from Indian Valley Road or Big Sandy Road.
From Interstate 5 take the California Highway 198 West at Jayne Avenue exit. Proceed west for approximately 16 miles to Parkfield Junction and go south on Parkfield Grade. Note: this road is not passable during the wet season. Continue south till you reach the intersection of Slacks Canyon Road and turn right. Slacks Canyon Road dead-ends at the trailhead.