"Hranická Propast" and other Notable Deep Underwater Caves or Sinkholes

Exclusive:  Deepest Underwater Cave Discovered
(Kat LONG, National Geographic; September 29, 2016)
http://www.nationalgeographic.com/adventure/activities/caving-and-canyoneering/deepest-underwater-cave-discovered/

World's deepest underwater cave found in Czech Republic
(Monica SCISLOWSKA, Phys.org; September 30, 2016)
http://phys.org/news/2016-09-explorer-deepest-underwater-cave.html

Have These Divers Found the World's Deepest Underwater Cave?
(Mark M. SYNNOTT, National Geographic; September 4, 2015)
http://news.nationalgeographic.com/2015/08/150904-cave-dive-czech-polish-deepest-flooded-adventure/

N. B.:  The aforementioned article contains an embedded video of Hranická Propast.



Other Notable Deep Underwater Caves/Sinkholes




Il Pozzo del Merro (Italy) - Documentary originally made for RAI tv  (N. B.:  In Italian!)



Acqua e fuoco 1.wmv (BLUSUB; March 17, 2011)





Acqua e fuoco 2.wmv (BLUSUB; March 17, 2011)






Dragon Hole (China):


World's deepest 'blue hole' discovered in South China Sea
(Michael D'ESTRIES, Mother Nature Network; July 27, 2016)
http://www.mnn.com/earth-matters/wilderness-resources/blogs/worlds-deepest-blue-hole-discovered-south-china-sea

N. B.:  The aforementioned article contains an embedded Exclusive video of Dragon Hole by CCTV News.

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