An endless blue sky bookended by mountain ranges is the setting for this KOA in Arizonas McMullen Valley, northwest of Phoenix. On US 60 between Wickenburg and Quartzsite, the campground provides unbeatable access to surrounding desert public lands. ATV riders can depart right from this KOA onto a web of more than 300 miles of trails that wind through hills and washes, and even to old gold mines. A half hour southwest, explore Kofa National Wildlife Refuge. Nearby Quartzsite is a rockhounds paradise (gem shows in winter). At KOA, enjoy the pool and hot tub, play mini golf or shoot a game of pool in "Diamond Jims Billiards Game Parlour." The clubhouse is perfect for reunions/parties.