I was looking to beat the heat which has been bad on the coast. I had heard that Icehouse Canyon, right near Mount Baldy, was cool even on hot days. I wound up getting caught in a freak storm with no rain gear which made for a very memorable day. If you hike here remember that you need both a Wilderness Adventure Pass for your car and a permit to enter the Cucamonga Wilderness area. The latter may be obtained for free at the Mount Baldy Visitor Center, which you will pass on the drive to the trailhead.