Sinkholes Like Orda Cave

Great Blue Hole

Karst

8.69 Great

Blue Hole of Dahab

Sinkhole

8.42 Great

Berezniki Sinkhole No. 1 (1986)

Sinkhole

8.05 Great

Boesmansgat (Bushman's Hole)

Sinkhole

8.02 Great

Cenote Maravilla

Sinkhole

7.87 Good

Berezniki Sinkhole No. 2 (2007)

Sinkhole

7.77 Good

Yekaterinburg

City

7.76 Good

Cenote Tajma Ha

Sinkhole

7.59 Good

Cenote Jardín del Edén (Ponderosa)

Sinkhole

7.50 Good

Ufa

City

7.42 Good

Hranice Abyss

Sinkhole

7.41 Good

Perm

City

7.21 Good

Blue Hole of Gozo

Sinkhole

7.16 Good

Cenote Calavera

Sinkhole

6.76 Fair

Chelyabinsk

City

6.73 Fair

Berezniki Sinkhole No. 4 (2010)

Sinkhole

6.67 Fair

Orenburg

City

6.64 Fair

Izhevsk

City

6.52 Fair

Berezniki Sinkhole No. 5 (2011)

Sinkhole

6.30 Fair

Watling's Blue Hole

Sinkhole

6.18 Fair

Magnitogorsk

City

5.31 Mediocre

Morrison's Spring

Sinkhole

5.24 Mediocre

Nizhny Tagil

City

4.97 Poor

Verkhneuralsk Steppe

Steppe

4.78 Poor