Lava Tubes Like Hidden Forest Cave
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
Pictograph Cave
Lava Tube
7.50
Good
Arnold Ice Cave
Lava Tube
7.40
Good
Bat Cave No. 1
Lava Tube
6.80
Fair
Horse Cave
Lava Tube
5.90
Mediocre
Undara Lava Tubes
Lava Tube
9.20
Excellent
Terwilliger Hot Springs
Hot Spring
8.43
Great
Umpqua Hot Springs
Hot Spring
8.36
Great
Haystack Rock (Cannon Beach)
Monolith
8.35
Great
Umm Jirsan Cave
Lava Tube
8.30
Great
Breitenbush Hot Springs
Hot Spring
8.21
Great
São Vicente Caves
Lava Tube
8.20
Great
Ana Te Pahu
Lava Tube
8.20
Great
Toketee Falls
Waterfall
8.20
Great
Cougar Hot Springs (Terwilliger)
Spring
8.12
Great
Wilson Butte Cave
Lava Tube
8.10
Great
Lava River Cave (Oregon)
Lava Tube
8.10
Great
Tunnel de lave de la coulée 2004
Lava Tube
8.10
Great
Cook's Chasm Spouting Horn
Blowhole
8.05
Great
Skeleton Cave
Lava Tube
8.02
Great
