Jewel Cave Backcountry Access Road

Hell Canyon earned its name from the bone-jarring descent down fractured limestone shelves toward the original Jewel Cave entrance, used by miners in the 1890s before the tourist cave was developed. This abandoned mining access road drops 900 feet through ponderosa pine and aspen groves, with exposed rock ledges that’ll scrape running boards and test your breakover angle. The payoff sits at Lithograph Canyon, where Native American petroglyphs mark seasonal hunting camps used for over a thousand years.

Difficult rating demands experienced drivers with rock sliders and skid plates — the limestone tears up oil pans faster than you’d think. Late spring through early fall only; winter ice makes the descent suicidal. Carry tire repair kit and recovery straps for the inevitable puncture or slide-off. No camping allowed within the cave protection zone, but dispersed sites exist along Forest Road 295. What you get is raw Black Hills history without the RV crowds, plus some of the best stargazing in South Dakota.