List of longest caves in the United States

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Mammoth Cave, the longest known cave system in the United States

The following is a list of the longest caves in the United States per length of documented passageways. Many passageways are still being discovered; this list is based on the latest verifiable data.[1]

# System Length Location coordinates Associated parks,
protected areas
1 Mammoth Cave 675.9 km (420.0 mi)[1][2] near Brownsville, Kentucky 37°11′15″N 86°06′13″W / 37.18758°N 86.10357°W / 37.18758; -86.10357 (Mammoth cave historic entrance) Mammoth Cave National Park, also a World Heritage Site and International Biosphere Reserve. Longest cave in the world.
2 Jewel Cave 335.5 km (208.5 mi)[1][3] near Custer, South Dakota 43°43′46″N 103°49′46″W / 43.72944°N 103.82944°W / 43.72944; -103.82944 (Jewel Cave) Jewel Cave National Monument
3 Wind Cave 248.1 km (154.2 mi)[1][4] near Hot Springs, South Dakota 43°33′29″N 103°28′46″W / 43.55804°N 103.47955°W / 43.55804; -103.47955 (Wind Cave) Wind Cave National Park
4 Lechuguilla Cave 242.0 km (150.4 mi)[1][5] near Carlsbad, New Mexico 32°10′12″N 104°28′59″W / 32.170000°N 104.483000°W / 32.170000; -104.483000 (Grotte de Lechuguilla) Carlsbad Caverns National Park
5 Fisher Ridge Cave System 209.2 km (130.0 mi)[1] near Brownsville, Kentucky 37°11′30″N 85°58′48″W / 37.191736°N 85.980122°W / 37.191736; -85.980122 partly within Mammoth Cave National Park
6 Great Savannah Cave System (Maxwelton Sink Cave[6]-McClung Cave[7]) 77.8 km (48.34 mi)[1] near Greenbrier County, West Virginia 37°51′35″N 80°24′22″W / 37.859703°N 80.406044°W / 37.859703; -80.406044 none
7 Friars Hole Cave System 77.4 km (48.09 mi)[1][8] near Renicks Valley, West Virginia 38°04′02″N 80°19′47″W / 38.067203°N 80.329775°W / 38.067203; -80.329775 (Friars Hole Cave) none
8 Binkley's Cave System 72.4 km (44.99 mi)[1] near Corydon, Indiana 38°10′58″N 86°09′00″W / 38.182812°N 86.149974°W / 38.182812; -86.149974 none
9 Hellhole 70.1 km (43.56 mi)[1] Germany Valley, West Virginia 38°46′17″N 79°22′41″W / 38.771361°N 79.378103°W / 38.771361; -79.378103 none
10 Fort Stanton Cave 68.2 km (42.38 mi)[1] near Lincoln County, New Mexico 33°30′24″N 105°29′37″W / 33.506670°N 105.493610°W / 33.506670; -105.493610 Fort Stanton–Snowy River Cave National Conservation Area
11 Kazumura Cave 65.5 km (40.70 mi)[1] Pahoa, Hawaii 19°31′08″N 155°01′52″W / 19.518890°N 155.031110°W / 19.518890; -155.031110 none
12 Double Bopper Cave (unverified) 65.3 km (40.58 mi)[1][9] Coconino County, Arizona Grand Canyon National Park
14 Blue Spring Cave 64.4 km (40.02 mi)[1] near Sparta, Tennessee 35°57′46″N 85°23′07″W / 35.962811°N 85.385311°W / 35.962811; -85.385311 none
15 Carlsbad Caverns 63.5 km (39.46 mi)[1] near Carlsbad, New Mexico 32°10′37″N 104°26′28″W / 32.177057°N 104.441039°W / 32.177057; -104.441039 Carlsbad Caverns National Park
16 Organ Cave 61.9 km (38.46 mi)[1] Greenbrier County, West Virginia 37°43′05″N 80°26′13″W / 37.718056°N 80.436944°W / 37.718056; -80.436944 none
Map all coordinates in "List of longest caves in the United States" using: OpenStreetMap 
Download coordinates as: KML

See also[]

References[]

  1. ^ a b c d e f g h i j k l m n o p Gulden, Bob (October 4, 2021). "USA Longest Caves". Retrieved 18 October 2021.
  2. ^ "Additional Miles Added to Mammoth Cave - National Park". National Park Service (NPS). September 11, 2021. Retrieved October 19, 2021.
  3. ^ "Jewel Cave Reaches 200 Miles". National Park Service (NPS). December 19, 2018. Retrieved December 19, 2018.
  4. ^ "150 miles and counting: Wind Cave celebrates significant milestone". National Park Service (NPS). October 18, 2018. Retrieved October 18, 2018.
  5. ^ "Lechuguilla Cave". National Park Service (NPS). July 17, 2019. Retrieved July 17, 2019.
  6. ^ West Virginia Cave Conservancy. "Management plan for the preserve of great Savannah cave system's lightner entrance to Maxwelton Sink Cave".
  7. ^ West Virginia Cave Conservancy. "Management plan for the preserve of great Savannah cave system's lightner entrance to historic McClung Cave"..
  8. ^ "Projects - West Virginia Association for Cave Studies". Retrieved 18 October 2021.
  9. ^ "Grand Canyon's Double Bopper Cave. Reaches 40 Miles Long". caves.org. Retrieved 18 October 2021..
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