Lookout Mountain Caverns (Lookout Mountain Cave, or Lower Cave) is the second-longest known cave in Hamilton County, Tennessee.[citation needed] Its mapped length of 2.481 miles (3.993 kilometers) places it at 361st on the United States Long Caves List.[citation needed] Unofficially, anecdotal reports of cave expeditions have exceed 12 miles with legends exceeding 82 miles.[1] The cave is closed and public access is forbidden.