Hike to a lovely mirror lake above Larrabee State Park. 7 mile loop. 1400 ft. total elevation gain. Meet at 9 am at the Lost Lake Trailhead parking lot, formerly known as the Clayton Beach Parking lot, at the south end of Larrabee State Park on Chuckanut Drive. You may leave when your carload has safely returned to the trailhead. WA State Discover Pass required for your vehicle.