Lava Tubes Like Underground Ice River

Fairy Palace Cave

Lava Tube

8.00 Great

Grotta del Gelo

Lava Tube

8.60 Great

Narusawa Ice Cave

Lava Tube

8.30 Great

Lofthellir

Lava Tube

8.00 Great

Fengshan Tiankeng

Sinkhole

7.96 Good

Bandera Volcano Ice Cave

Lava Tube

7.80 Good

Skull Cave

Lava Tube

7.70 Good

Arnold Ice Cave

Lava Tube

7.40 Good

Heppe Ice Cave

Lava Tube

7.20 Good

Merrill Cave

Lava Tube

7.00 Good

Giant Ice Cave

Lava Tube

7.00 Good

Leye Tiankeng

Sinkhole

6.88 Fair

Cheese Cave

Lava Tube

6.50 Fair

Niter Ice Cave

Lava Tube

6.40 Fair

Manjanggul Cave

Lava Tube

9.20 Excellent

Leviathan Cave

Lava Tube

9.20 Excellent

Kazumura Cave

Lava Tube

9.20 Excellent

Undara Lava Tubes

Lava Tube

9.20 Excellent

Cueva del Viento

Lava Tube

9.20 Excellent

Túnel de la Atlántida

Lava Tube

9.10 Excellent

Algar do Carvão

Lava Tube

9.10 Excellent

Jameos del Agua

Lava Tube

9.00 Excellent

Víðgelmir

Lava Tube

9.00 Excellent

Nāhuku (Thurston Lava Tube)

Lava Tube

8.80 Great