This labyrinth of tunnels and caves in the depths of Třesín hilltop northwest of Olomouc was already inhabited during ancient times; the age of the tools, hearth and bones of the people and animals there is estimated to be 35,000 years old. The cave with many stalactites and stalagmites are still a haven for speleology and archaeology. The most beautiful part of the underground area includes the Temple of Nature and the Virgin Cave. You can enjoy a narrative exhibition with figurines of prehistoric people, depicting their ancient ritual, in the Dome of the Dead.