"For sleeping among the surreal sandstone, Devils Garden Campground is the park's 51-site option and the only campground inside the park proper; reservations are required from March 1 through Oct. 31 and it typically fills each night, while outside those months sites are first-come, first-served." - Stephanie Vermillion Stephanie Vermillion Stephanie Vermillion is a travel journalist and photographer covering culture and adventure for Travel + Leisure Outside, and more. Travel + Leisure Editorial Guidelines