The exhibition in the chamber of the old house presents the largest caverns of the region (Baradla-, Béke-, Kossuth-, Vass Imre-, Esztramosi Rákóczi-, Meteor-caverns), the most important characters in the research on Baradla, the principles and practice of the cartography of caverns, the model of the intention of the owls, the equipment of the researchers, the technique of cavern exploration with one rope, stones, and minerals.