Within the steep and rugged Griswold Canyon, BLM land straddles both sides of the road. Visitor service improvements are now complete at the new day use facility, which features a parking area, a shade structure, picnic benches, a vault toilet, and a kiosk providing an interpretive panel, a map, and information about the area.
From State Highway 25, take a left onto Tres Pinos Road (J-1) at Paicines, and head east. Continue east past the intersection of Little Panoche Road; in approximately 3 miles you will come to a fork. Take the road to the right going south (New Idria Road) towards the Idria. The developed trailhead is located on the east side of the road approximately 3 miles from the road fork. An undeveloped trailhead is located on the west side of the road another mile to the south towards Idria.