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Longest caves in the world

The 50 longest caves in the world with a recorded length.

  1. 1
    Sistema Ox Bel Ha
    Mexico
    541,700 m
  2. 2
    Shuanghedong
    China
    437,400 m
  3. 3
    Sistema Sac Actun
    Mexico
    378,560 m
  4. 4
    Clearwater Cave System
    Malaysia
    265,882 m
  5. 5
    Optymistychna Cave
    230,000 m
  6. 6
    Hölloch
    Switzerland
    211,229 m
  7. 7
    Siebenhengste-Hohgant-Höhle
    Switzerland
    164,500 m
  8. 8
    Schönberg-Höhlensystem
    Austria
    156,900 m
  9. 9
    Mortillano system
    Spain
    146,500 m
  10. 10
    Priest's Grotto
    Ukraine
    140,490 m
  11. 11
    Réseau Félix Trombe
    France
    126,343 m
  12. 12
    Bullita Cave
    Australia
    120,000 m
  13. 13
    Hirlatzhöhle
    Austria
    118,250 m
  14. 14
    Toca da Boa Vista
    Brazil
    114,000 m
  15. 15
    Marosakabe cave system
    Madagascar
    113,024 m
  16. 16
    Sistema Huautla
    Mexico
    100,242 m
  17. 17
    Three Counties System
    90,000 m
  18. 18
    Gouffre de la Pierre Saint-Martin
    Spain
    88,111 m
  19. 19
    Friars Hole Cave System
    United States
    82,500 m
  20. 20
    Sistema Dos Ojos
    Mexico
    82,472 m
  21. 21
    Candelaria Caves
    Guatemala
    80,000 m
  22. 22
    Sudwala Caves
    South Africa
    79,012 m
  23. 23
    Hellhole
    United States
    70,167.2 m
  24. 24
    Sistema Nohoch Nah Chich
    Mexico
    67,000 m
  25. 25
    Ease Gill Cave System
    United Kingdom
    66,000 m
  26. 26
    Ogof Draenen
    United Kingdom
    66,000 m
  27. 27
    Kazumura Cave
    United States
    65,500 m
  28. 28
    Ogof Ffynnon Ddu
    United Kingdom
    59,000 m
  29. 29
    Jiangzhou Cave System
    China
    53,070 m
  30. 30
    Tenglong Cave
    China
    52,800 m
  31. 31
    Wakulla Springs
    United States
    51,482.8 m
  32. 32
    Lamprechtsofen
    Austria
    51,000 m
  33. 33
    Mlynky
    Ukraine
    50,000 m
  34. 34
    Migovec System
    Slovenia
    45,329 m
  35. 35
    Gouffre Berger
    France
    45,000 m
  36. 36
    Cumberland Caverns
    United States
    44,578.7 m
  37. 37
    Er Wang Dong
    China
    42,139 m
  38. 38
    Eisriesenwelt
    Austria
    42,000 m
  39. 39
    Réseau du Clot d'Aspres
    France
    42,000 m
  40. 40
    Lysenia
    Ukraine
    34,000 m
  41. 41
    Ellis Basin cave system
    New Zealand
    33,400 m
  42. 42
    Ogof Agen Allwedd
    United Kingdom
    32,500 m
  43. 43
    Choranche Cave
    France
    32,301 m
  44. 44
    Thien Duong Cave
    Vietnam
    31,000 m
  45. 45
    Gouffre Jean-Bernard
    France
    29,558 m
  46. 46
    Ogof y Daren Cilau
    27,000 m
  47. 47
    Postojna Cave
    Slovenia
    24,340 m
  48. 48
    Akkadō
    Japan
    23,702 m
  49. 49
    Gouffre Mirolda
    France
    22,032 m
  50. 50
    Gaping Gill
    United Kingdom
    21,000 m