On behalf of the German Speleological Federation (VdHK), the Karstgruppe Mühlbach (KGM), the  Forschungsgruppe Höhle und Karst Franken (FHKF) and the Ingolstädter Höhlenfreunde (IHF) cordially invite you to the 62nd annual meeting of the VdHK in Dietfurt an der Altmühl … Continued