First Fork Road Access serves as the lower trailhead for the Piedra River Trail (#596), located at the end of Forest Road 622/County Road 122 near Piedra Hunter's Campground.

This access point provides foot and whitewater craft entry to an 11-mile roadless section of the Piedra River featuring spectacular box canyons and pristine wilderness conditions.

The trailhead is situated on the west side of a bridge at approximately 7,200 feet elevation, with First Fork Road open year-round, though the steep and narrow 11. 8-mile approach road requires careful driving.