The room of minerals exhibits the 400 million-year-old geological history of the Bled region, which was shaped by relief folding and erosion leading to the formation of the Bled Basin. Some 20,000 years ago, during the ice age, the region was covered by the Bohinj glacier whose mass and tributaries filled nearly all the Bled-Radovljica valley.

Many of the exhibited minerals and crystals originate from numerous volcanic eruptions and earthquakes. Fossils reveal that in distant times, the region was submerged under the sea.

The first man-related finds are exhibited inside a cave modelled after the Poglej Church Cave near Poljšica where they were found. They belong to the late ice age period, when glaciers had already retreated higher into the mountains and forests spread across the lowlands. The resulting landscape that was suitable for population and prehistoric men left numerous remains here. Exhibited items feature bones of hunted animals and stone tools from the Paleolithic period.