From their Site: “24 Hours of Horseshoe Hell is an endurance rock climbing competition and festival, held annually on the last full weekend of September, within the steep sandstone cliff walls of Horseshoe Canyon Ranch, Jasper, AR. Teams of two have the opportunity to choose between a 12 hour and 24 hour event, and the festival lasts five days with food, camping, music, swag, games, competition, parties, and most of all fellowship. Join our beautiful community, and pack your costume!”