Sinkholes Like Vrtoglavica
Harwood Hole
Sinkhole
6.53
Fair
Red Lake (Crveno Jezero)
Sinkhole
8.19
Great
Sima de las Cotorras
Sinkhole
7.64
Good
Ellison's Cave (Fantastic Pit)
Sinkhole
6.81
Fair
Great Blue Hole
Karst
8.69
Great
Dean's Blue Hole
Karst
8.33
Great
Ljubljana Marsh
Marsh
8.18
Great
Škocjan Caves
Karst
8.11
Great
Boesmansgat (Bushman's Hole)
Sinkhole
8.02
Great
Blue Lake (Modro Jezero)
Sinkhole
7.91
Good
Dashiwei Tiankeng
Karst
7.77
Good
Miao Room (Miao Keng)
Sinkhole
7.75
Good
Xiaozhai Tiankeng
Karst
7.68
Good
Postojna Cave
Monument
7.65
Good
Predjama Cave
Karst
7.59
Good
Migovec Cave System
Karst
7.36
Good
Trieste Karst (Kras)
Karst
7.22
Good
Gouffre Pierre Saint-Martin
Karst
7.19
Good
Pozzo del Merro
Sinkhole
7.04
Good
Planinska Jama
Karst
6.85
Fair
Križna Jama
Karst
6.83
Fair
Rakov Škocjan
Karst
6.62
Fair
Lamprechtsofen
Karst
6.58
Fair
Gouffre Berger
Karst
6.53
Fair
