Tuff Cones Like Ijen maar (East Java)
Kelud maar (East Java)
Tuff Cone
7.54
Good
Kawah Ijen fumaroles
Fumarole
8.33
Great
Vulcan Island (Taal Lake)
Tuff Cone
8.08
Great
Kawah Papandayan Mudpots
Mudpot
8.00
Great
Rinjani maar (Segara Anak)
Tuff Cone
8.00
Great
Batur maar features (Bali)
Tuff Cone
7.73
Good
Semeru fumaroles
Fumarole
7.54
Good
Tavurvur area tuff cones
Tuff Cone
7.47
Good
Kawah Wurung
Mudpot
7.27
Good
Bromo fumaroles
Fumarole
7.22
Good
Kelud fumaroles
Fumarole
7.08
Good
Grimsvötn tuff cones
Tuff Cone
6.81
Fair
Papandayan fumaroles
Fumarole
6.49
Fair
Merapi fumaroles
Fumarole
5.75
Mediocre
Lake Toba (Sumatra) tuff features
Tuff Cone
8.74
Great
Hunga Tonga
Tuff Cone
8.69
Great
Hunga Ha'apai
Tuff Cone
8.57
Great
Tambora maar features
Tuff Cone
8.56
Great
Kawah Ijen Area Mudpots
Mudpot
8.37
Great
Krakatau fumaroles
Fumarole
8.33
Great
Surtsey
Tuff Cone
8.33
Great
Bogor Botanical Gardens
Botanical Garden
8.30
Great
Kelimutu fumaroles
Fumarole
8.28
Great
Mývatn tuff cones (various)
Tuff Cone
8.28
Great
