Drove to 16700 Crater Road, Amboy, CA, 92304. Started the 1.1 mile hike from the picnic area parking lot. There are three benches (with backrests!) spaced along the trail that provide valuable shade from the burning hot sun during the summer. Trail climbs steeply up the west side and enters the crater through a “blowout” in the side. You don’t climb over the rim to enter the crater.