swap_horiz Mammoth Cave Alternatives

1

Manjanggul

Manjanggul is a lava tube on Jeju Island, South Korea, extending approximately 8.9 kilometers. It formed from basaltic l...

South Korea Unesco Jeju Show Cave

9.5 Brilliant

2

Jeju Volcanic Island Tubes (UNESCO site)

Jeju Volcanic Island and Lava Tubes is a UNESCO World Heritage property on Jeju Island, South Korea, inscribed in 2007....

Korea Protected World Heritage Multiple

9.5 Brilliant

3

Kipuka Kanohina Cave System

The Kipuka Kanohina Cave System is an extensive network of lava tubes located on the southwestern rift zone of Mauna Loa...

Hawaii Mauna Loa Conservation Cave System

9.4 Excellent

4

Kazumura Cave

Kazumura Cave is a privately accessible lava tube within Hawaii’s Kilauea volcano. It represents a significant geologica...

Hawaii Kilauea Private Longest

9.2 Excellent

5

Leviathan Cave

Leviathan Cave is a substantial lava tube within Kenya’s Chyulu Hills. It represents one of Africa's longest known lava...

Africa Kenya Long Chyulu Hills

9.2 Excellent

6

Cueva del Viento

Cueva del Viento is a substantial lava tube located on the island of Tenerife, Spain. Formed during volcanic activity ap...

Spain Multi Level Long Tenerife

9.2 Excellent

7

Undara Lava Tubes

Undara Lava Tubes are extensive subterranean passages within a basalt landscape in Queensland, Australia. Formed by slow...

Australia Queensland Basalt Show Cave

9.2 Excellent

8

Manjanggul Cave

Manjanggul Cave is a remarkably extensive lava tube located on Jeju Island, South Korea. Formed by flowing basaltic lava...

Asia Volcanic South Korea World Heritage

9.2 Excellent

9

Algar do Carvão

Algar do Carvão is a significant lava tube located in Portugal’s Azores islands. It's notable for being one of Europe’s...

Portugal Azores Show Cave Terceira

9.1 Excellent

10

Túnel de la Atlántida

The Túnel de la Atlántida is a submerged lava tube located off the coast of Lanzarote, Spain. It represents one of the l...

Spain Submarine Lanzarote LA Corona

9.1 Excellent

11

Thurston Lava Tube (Nāhuku)

Thurston Lava Tube, known in Hawaiian as Nāhuku, is a lava cave in Hawaiʻi Volcanoes National Park on the island of Hawa...

Big Island Hawaii National Park Short

9.1 Excellent

12

Ape Cave

Ape Cave is a remarkably long lava tube situated within the Mount St. Helens National Volcanic Monument of Washington St...

Washington Long Usfs St Helens

8.7 Great

13

Catacombs Cave

Catacombs Cave is a significant lava tube within California’s Lava Beds National Monument. The cave represents an unusua...

California Long Nps Lava Beds

8.5 Great

14

Bayliss Cave

Bayliss Cave is a lengthy lava tube within Undara Lava Tubes National Park in Queensland, Australia. It’s notable as one...

Australia Queensland Long Undara

8.0 Great

15

Skeleton Cave

Skeleton Cave is a 3,560-foot-long lava tube located in the high desert near Bend, Oregon, formed by ancient volcanic ac...

Historic Oregon Caving Bend

8.0 Great

16

Cueva de los Murciélagos

Cueva de los Murciélagos is a notable volcanic lava tube system located on the island of La Palma in Spain's Canary Isla...

Canary Islands Caving Bats LA Palma

7.7 Good

17

Billegul

Billegul is an extensive lava-tube cave on Jeju Island, South Korea, notable for the island's characteristic basalt pass...

South Korea Jeju Caving Volcanic Cave

7.5 Good

18

Tabernacle Hill Lava Tubes

The Tabernacle Hill Lava Tubes are a series of volcanic caves situated in Millard County, Utah. They were formed during...

Public Utah Basalt Fillmore

7.3 Good

19

Mammoth Cave (Utah)

Mammoth Cave is an extensive lava tube located within Utah's Dixie National Forest, formed by cooling basaltic lava flow...

Public Utah Basalt Dixie Forest

7.2 Good

20

Bear Trap Cave

Bear Trap Cave is a lava tube in Idaho's Craters of the Moon National Monument and Preserve. It lies within the Great Ri...

Idaho Remote Long Great Rift

6.5 Fair