swap_horiz Algar do Carvão 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

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

3

Víðgelmir

Víðgelmir is a vast Icelandic lava tube located within the Hallmundarhraun lava field. It’s notable for being one of Eur...

Large Iceland Show Cave Hallmundarhraun

9.0 Excellent

4

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

9.0 Excellent

5

Nāhuku (Thurston Lava Tube)

Nāhuku, or Thurston Lava Tube, offers a unique glimpse into volcanic activity within Hawaii Volcanoes National Park. Thi...

Hawaii Kilauea Nps Show Cave

8.8 Great

6

Gruta das Torres

The Gruta das Torres is a significant lava tube situated on Pico Island, Azores. It represents Portugal’s largest known...

Pico Portugal Azores Show Cave

8.7 Great

7

Bandera Ice Cave

The Bandera Ice Cave is a lava tube located in the El Malpais area of western New Mexico, near the town of Grants. It fo...

New Mexico Ice Cave Show Cave Bandera Volcano

8.6 Great

8

Raufarhólshellir

Raufarhólshellir is a remarkable Icelandic lava tube formed by ancient basaltic flows. Its notable feature is extensive...

Iceland Show Cave Skylights Leitahraun

8.5 Great

9

Gruta das Torres (Pico)

Gruta das Torres is a volcanic lava tube on Pico Island in the Azores, Portugal. With a total length of about 5,150 mete...

Guided World Heritage Azores Pico Island

8.5 Great

10

Furna do Enxofre (Graciosa)

Furna do Enxofre is a basaltic lava cave inside the Caldeira da Graciosa Natural Monument on Graciosa Island in the Azor...

Guided Unique Azores Graciosa

8.3 Great

11

São Vicente Caves

The São Vicente Caves represent a significant example of a Portuguese lava tube. Formed during ancient basaltic eruption...

Portugal Madeira Basalt Show Caves

8.2 Great

12

Hana Lava Tube

The Hana Lava Tube offers a unique glimpse into Maui’s volcanic past. This privately-owned show cave preserves a natural...

Private Maui Show Cave Pahoehoe

8.1 Great

13

Lava River Cave (Oregon)

The Lava River Cave in Oregon represents a significant geological feature within the Newberry National Volcanic Monument...

Oregon Usfs Show Cave Newberry

8.1 Great

14

Gruta do Carvão

Gruta do Carvão is a remarkable lava tube within the Azorean archipelago of São Miguel Island. Formed during volcanic ac...

Portugal Azores Sao Miguel Show Cave

8.1 Great

15

Gruta do Natal

Gruta do Natal, also known as Christmas Cave, is a lava tube located on Terceira Island in the Azores archipelago of Por...

Portugal Azores Show Cave Terceira

7.6 Good

16

Furna de Água

Furna de Água is a notable lava tube located on Graciosa Island in the Azores, Portugal, historically serving as a cruci...

Water Portugal Azores Terceira

7.3 Good

17

Gruta das Cinco Ribeiras

Gruta das Cinco Ribeiras is a volcanic cave system located on the island of Terceira in the Azores archipelago, Portugal...

Portugal Azores Basalt Terceira

7.1 Good

18

Galerias da Feteira

Galerias da Feteira is a lava tube system located on Terceira Island in the Azores, Portugal, known for its complex volc...

Portugal Azores Terceira Galleries

7.0 Good

19

Gruta do Zé Grande

Gruta do Zé Grande is a lava tube located on Pico Island in the Azores, Portugal, notable for its impressive volcanic pa...

Portugal Azores Basalt Terceira

6.8 Fair

20

Gruta Brisa Azul

Located on Graciosa Island in the Azores, Portugal, Gruta Brisa Azul is a notable lava tube formed by historic basaltic...

Coastal Portugal Azores Terceira

6.7 Fair