Eroded hills of sedimentary conglomerate and sandstone, Unesco World Heritage, Zhangye, China

environment awareness natural area mountain hill erosion geological formation nature tourism overview colorful relief panel national park stoneware unesco's world heritage tourism facilty july sedimentary rock nobody zhangye national geopark environment naturalness area landform earth's crust ecotourism tourism journey leisure shot colour signalitic object material environment protection environment management biodiversity management mineral matter matter (substance) month of year rock individual gansu (province) china east asia far east asia continent environment sensitization environment sensitizations nature natural areas ecosystem ecosystems mountains hills hillside hillsides erosions wear (geology) geological formations geologic form geologic forms overviews global sight global sights full length colourful rudy colorfully colored reliefs notice panels notices national parks sensitive natural areas sandstone world heritage site tourism facilties sedimentary rocks with nobody china danxia danxia landform of china