Jochen Hasenmeyer has built a cave diving submarine and recently used it to extend the Blautopf resurgence in Germany. It must be true because I read it in the CDG Newsletter.
His bio (in German) is here: http://de.wikipedia.org/wiki/Jochen_Hasenmayer
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DISCLAIMER: Cave diving is dangerous. Do not do it! Remember I told you so. Everything else I say is bollocks. |