Lava Tubes Like Pictograph Cave

Arnold Ice Cave

Lava Tube

7.40 Good

Hidden Forest Cave

Lava Tube

7.00 Good

Bat Cave No. 1

Lava Tube

6.80 Fair

Boulder Cave

Lava Tube

6.50 Fair

Charcoal Cave No. 2

Lava Tube

6.00 Fair

Charcoal Cave No. 1

Lava Tube

5.80 Mediocre

HFBD

Lava Tube

5.20 Mediocre

Neighboring Cave

Lava Tube

5.10 Mediocre

Jeju Volcanic Island Tubes (UNESCO site)

Lava Tube

9.47 Excellent

West Eugene Wetlands Prairie

Prairie

8.36 Great

Lava River Cave (Oregon)

Lava Tube

8.10 Great

Skeleton Cave

Lava Tube

8.02 Great

Kingston Prairie Preserve

Prairie

8.01 Great

Skylight Cave

Lava Tube

8.00 Great

Ana Kai Tangata

Lava Tube

7.36 Good

Camas Swale Prairie

Prairie

7.35 Good

Boyd Cave

Lava Tube

7.30 Good

Derrick Cave

Lava Tube

7.20 Good

Skeleton Cave (Oregon)

Lava Tube

7.10 Good

Redmond Cave

Lava Tube

7.00 Good

South Ice Cave

Lava Tube

6.86 Fair

Horse Cave

Lava Tube

5.90 Mediocre

Airport Cave

Lava Tube

5.70 Mediocre

Lions Cave

Lava Tube

5.40 Mediocre