Biesak–Białogon geological reserve
Located on the south-eastern outskirts of Kielce in the Dyminy Range, on the slopes of Kamienna Góra, it is known to locals as “Kamionka”. We can reach the reserve on foot by taking the extension of the Na Ługach street that runs through Białogon.
When visiting the Biesak-Białogon reserve, we observe the oldest rocks that mining works have exposed in the whole Chęcinsko-Kielecki Landscape Park and the oldest on our Archeogeological Trail. Here we can find conglomerates, quartzitic sandstones, mudstones and shale. Rocks exposed in the upper parts of the faces and in the canyon located in the northern part of the quarry are from the early Cambrian period (ca. 510-520 Ma). In the southern and eastern parts of the quarry almost identical rocks were formed in the Ordovician period. (465-480 Ma). As a result of tectonic movements the Cambrian rocks on the northern face of the quarry slid on top of the Ordovician rocks. Another curiosity is the presence of bentonite – a sediment formed from weathering of volcanic ash in marine conditions in the Ordovician period. Its layer, which is ca. 10 centimetres thick, is located on the northern face of the excavation, just above the surface of the water that flooded the lowest section of the quarry. This is a very charming reserve and the tall spruce and pine trees reflecting on the surface of the water create an intriguing and mysterious impression.