Fabienne Bamert from Central Switzerland TV channel Tele1 was brave enough and descended into the vastness of the Hölloch cave. She was accompanied by our two cave guides Marcel and Martin
If you missed the broadcast, you can watch the program under this link again (only in German).
And if you would like to do a similar tour yourself – she did the exciting and adventurous half-day tour “Hölloch Parcours”. Further informatiom about that tour