I grew up very close to this hidden gem named Pumpkin Rock and never knew of it’s existence until recently. It is about a 1-mile round trip hike from the trailhead. The best place to park is along Vandermolen Drive in Norco, but be respectful while parking because this is a residential area. The hike is steep in some places but fairly easy and quick. There is nothing spectacular to see on the way up but at the top of the trail is the Giant Pumpkin Rock and on a clear day, a nice view of Corona and Norco.