swap_horiz Millennium Cave Alternatives

1

Manjanggul

Beneath Jeju Island in South Korea, Manjanggul preserves a passage formed when the surface of flowing basaltic lava cool...

South Korea Unesco Jeju Show Cave

9.54 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

9.47 Excellent

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

9.42 Excellent

4

Kazumura Cave

Beneath the eastern side of Hawaii's island of Hawaiʻi, Kazumura Cave is an extensive lava tube associated with Kīlauea...

Hawaii Kilauea Private Longest

9.20 Excellent

5

Leviathan Cave

Located in Kenya's Chyulu Hills, Leviathan Cave is a lava tube system with explored passages extending more than eleven...

Africa Kenya Long Chyulu Hills

9.20 Excellent

6

Cueva del Viento

Beneath Tenerife in Spain's Canary Islands, Cueva del Viento is an extensive lava tube system formed by volcanic activit...

Spain Multi Level Long Tenerife

9.20 Excellent

7

Undara Lava Tubes

In Queensland, Australia, the Undara Lava Tubes are underground passages left by basaltic lava flows approximately 190,0...

Australia Queensland Basalt Show Cave

9.20 Excellent

8

Manjanggul Cave

Beneath Jeju Island in South Korea, Manjanggul preserves a long passage formed by flowing basaltic lava. A lava tube dev...

Asia Volcanic South Korea World Heritage

9.20 Excellent

9

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

9.12 Excellent

10

Algar do Carvão

On Terceira in Portugal's Azores, Algar do Carvão is a volcanic vent that visitors can descend into, rather than a typic...

Portugal Azores Show Cave Terceira

9.10 Excellent

11

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

9.10 Excellent

12

Jameos del Agua

Jameos del Agua is a remarkable natural lava tube located on Lanzarote Island, Spain. Formed during volcanic activity, i...

Spain Lanzarote Show Cave Anchialine

9.00 Excellent

13

Thurston Lava Tube (Nahuku)

The Thurston Lava Tube, formerly known as Nahuku, offers a unique glimpse into volcanic activity. Located within Hawai'i...

Accessible Hawaii National Park Volcanic

8.72 Great

14

Leiðarendi Cave

Leiðarendi Cave is a lava tube in a lava field near Bláfjöll, the Blue Mountains, in southwest Iceland. Its passages con...

Accessible Guided Medium Iceland

8.31 Great

15

Hana Lava Tube (Ka'elekū Caverns)

Hana Lava Tube, also called Ka'eleku Caverns, is a lava tube near Hana on the island of Maui, Hawaii. It formed when bas...

Accessible Hawaii Tourist Guided

8.21 Great

16

Waipu Cave

Waipu Cave is a limestone cave system in the Waipu area of Northland, on New Zealand's North Island. Its passages contai...

Accessible New Zealand Tourist Northland

7.23 Good

17

Waianapanapa Caves

Waianapanapa Caves are lava-tube formations in Waiʻānapanapa State Park on Maui, Hawaiʻi. They were created when molten...

Accessible Coastal Hawaii Maui

7.08 Good

18

Anahulu Cave (Tonga)

Anahulu Cave is a limestone cave in the village of Haveluliku on Tongatapu, Tonga. It is known for freshwater pools insi...

Accessible Tourist Pacific Freshwater

6.91 Fair

19

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

6.50 Fair

20

Wapi Cave

Wapi Cave is a geologically significant lava tube located within the Wapi lava field in Idaho, USA, formed during a preh...

Idaho Remote Volcanic North America

6.47 Fair