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Lookout Mountain Caverns

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

Wikipedia ↗

Cave data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).

More caves in United States

  1. Lechuguilla Cave489 m deep
  2. Carlsbad Caverns National Park333 m deep
  3. Natural Tunnel State Park0.3 km
  4. Merrill Cave0.2 km
  5. Layser Cave0 km

Other notable caves worldwide

  1. Mammoth Cave · Australia686 km
  2. Sistema Sac Actun · Mexico119.2 m
  3. Lechuguilla Cave · United States489 m
  4. Optymistychna Cave · Ukraine20 m
  5. Veryovkina Cave · Georgia2,212 m
  6. Krubera Cave · Georgia2,199 m
  7. Sarma cave · Georgia1,830 m
  8. Clearwater Cave · Malaysia109 km