the sandstone rock layers in the przadki spinners nature reserve

arcade bedding bioerosion carvings cellular corrasion cracks deflation eocene erosion erosive exfoliation fancy fissures fold form forms furrows geological geology insolation joint layers lifeless mushy narrows nature neck pass pits podkarpackie poland pores province przadki reserve rock rough sandstone sedimentary shales shape spinners spongy stone structure suffosion surface texture vallecula voivodeship weathering