swap_horiz HFBD Alternatives

1

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

2

Grotta dei Lamponi

Grotta dei Lamponi is a prominent lava tube on the northern flank of Mount Etna, Italy, recognized for its extensive len...

Italy Wild Basalt Etna

7.6 Good

3

Pictograph Cave

Pictograph Cave is a notable lava tube in El Malpais National Monument, New Mexico, renowned for preserving historic Nat...

Protected Oregon Rock Art Arnold System

7.5 Good

4

Grotta di Serracozzo

Grotta di Serracozzo is a notable lava tube located on Mount Etna in Italy, distinguished by its active fumaroles and th...

Italy Wild Basalt Etna

7.5 Good

5

Arnold Ice Cave

Arnold Ice Cave is a prominent lava tube in Oregon's Deschutes National Forest, historically notable for its massive, ye...

Historic Ice Oregon Arnold System

7.4 Good

6

Billemotdonggul Lava Tube

Billemotdonggul Lava Tube, located on Jeju Island in South Korea, is a notable geological formation recognized for its c...

South Korea Wild Jeju Basalt

7.4 Good

7

Skull Caves

Skull Caves is a known lava tube system in Kenya's Mount Suswa, named for the various animal skeletal remains historical...

Wild Kenya Basalt Chyulu Hills

7.3 Good

8

Skeleton Cave (Arizona)

Skeleton Cave is a historical lava tube in Arizona's Tonto National Forest, known as the tragic 1872 site where the US A...

Arizona Wild Basalt San Francisco Field

7.2 Good

9

Gjábakkahellir

Gjábakkahellir is a significant lava tube in Iceland, situated near Lake Hreðavatn, and is renowned for its large dimens...

Wild Iceland Basalt Thingvellir

7.2 Good

10

Hells Teeth

Hells Teeth is a striking lava tube cave located in Saudi Arabia, renowned for its jagged volcanic rock formations and e...

Wild Kenya Basalt Chyulu Hills

7.1 Good

11

Hidden Forest Cave

Hidden Forest Cave is a rugged lava tube in Oregon's Deschutes National Forest, notable for its deep pits and the unique...

Forest Oregon Basalt Arnold System

7.0 Good

12

Bat Cave No. 1

Bat Cave No. 1 is a notable lava tube in New Mexico's El Malpais National Monument, serving as an important historical s...

Seasonal Oregon Bats Arnold System

6.8 Fair

13

Grotta Cassone

Grotta Cassone is a volcanic lava tube located on Mount Etna in Italy, notable for its close proximity to other major ca...

Italy Wild Basalt Etna

6.8 Fair

14

Arnarker

Arnarker is a notable lava tube cave located in the Samsstaðamúli crater area of southern Iceland, distinguished by its...

Wild Iceland Basalt Reykjanes

6.7 Fair

15

Grotta del Santo

Grotta del Santo is an Italian lava tube on Mount Etna, historically notable as a hermitage and recognized by the presen...

Italy Wild Basalt Etna

6.6 Fair

16

Boulder Cave

Boulder Cave is a distinct lava tube located in Washington's Cascade Mountains, notable for the stream that flows direct...

Breakdown Oregon Basalt Arnold System

6.5 Fair

17

Charcoal Cave No. 2

Charcoal Cave No. 2 is a basaltic lava tube in Oregon's Deschutes County, notable for preserving prehistoric charcoal de...

Wild Oregon Basalt Arnold System

6.0 Fair

18

Horse Cave

Horse Cave is a notable lava tube located in the volcanic regions of the western United States, recognized for its wide...

Public Oregon Basalt Horse System

5.9 Mediocre

19

Charcoal Cave No. 1

Charcoal Cave No. 1 is a notable lava tube in Oregon's Deschutes National Forest, recognized for the historical charcoal...

Wild Oregon Basalt Arnold System

5.8 Mediocre

20

Neighboring Cave

Neighboring Cave is a mapped lava tube located in the Pacific Northwest, notable for its close proximity to larger, more...

Wild Oregon Basalt Arnold System

5.1 Mediocre