It was impossible to explore in the cave with the hard hat diving equipment. After the introduction of SCUBA equipment, the Hungarian scientists started testing them. In 1954 the team of Hubert Kessler dr., Attila Chambre, and Ödön Rádai started explorations in the Malom-tó to find a way to the Molnár János Cave. They borrowed Dräger breathing apparatus from the firefighters but these first dives weren’t successful.
