Arizona White-Knuckle is an outdoor adventure tour company. They provide guided adventures such as mountain biking, hiking, rock climbing, canyoneering, and kayaking, and work with groups of all sizes and with their extensive background in custom adventures. The White-Knuckle is permitted for tours in many national parks and local wilderness areas. All of its guides have mastered their chosen disciplines and their love for the endeavor is matched only by their concern and respect for their outdoor resources.