On March 22, 1904, the Quarry Cave or the Mladečské Cave II was discovered near the main site by quarry workers and subsequently destroyed. The workers found three human skulls, which were likely to have been Mladeč 5, Mladeč 6 and Mladeč 46. The discovery of human fossils was big news at the time in the Austro-Hungarian Empire and thus attracted a lot of attention. The mayor of nearby Litovel, Jan Smyčka, arrived soon after. Szombathy returned to the site on August 25, where he was presented with the new fossil finds.