Accessible only by hiking in and marked only by a graffitied map, Peppersauce Cave feels very different from better-known cave systems that feature guided tours, parking lots, and paths with handrails. The cave is located in the Coronado National Forest north of Tucson, Arizona. A 1948 article in The Desert Magazine brought the site, which was reportedly discovered by deer hunters, to the attention of the wider public. You can still see wonders described in the article, including an underground lake, which is the main draw for many visitors, and a rock “slide.”…