Cumberland Gap Iron Furnace Heritage Road

This forgotten forest road leads to the crumbling stone remains of Newlee Iron Furnace, built in 1819 to feed the Tennessee iron boom that armed Confederate forces. The route splits off from Wilderness Road near Cumberland Gap National Historical Park’s boundary, climbing through Daniel Boone National Forest on loose limestone and shale that’ll test your tire compound. You’ll pass Civil War earthworks and slag piles before reaching the 30-foot stone furnace stack, still standing after two centuries of Appalachian weather.

Difficult rating comes from technical rock ledges, off-camber limestone shelves, and seasonal mud holes that can swallow stock vehicles whole. Lockers recommended, but skilled drivers can make it through with good tires and patience. Spring and fall offer the best conditions — summer gets swampy, winter brings ice on the limestone. No permits required, but notify park rangers if you plan to camp. The history lesson is worth the scraped skid plates, and you’ll have Kentucky, Virginia, and Tennessee visible from the furnace overlook.