Cheizz
Contributor
Apparently, there is some interesting cave/mine diving in Czech Republic and Poland too...
www.deeperblue.com
www.scubadiving.com
Also, check out the scubamedia.de Youtube account for all kinds of local German dive sites: https://www.youtube.com/c/ScubamediaDe/videos

The Czech Republic Now Has The Deepest Underwater Cave In The World - DeeperBlue.com
Looks like the Pozzo del Merro sinkhole in Italy no longer has the deepest underwater cave in the world.


Afterglow in the Underworld
Scuba divers explore a flooded uranium mine shaft in Poland and uncover its dark roots from World War II.
Also, check out the scubamedia.de Youtube account for all kinds of local German dive sites: https://www.youtube.com/c/ScubamediaDe/videos