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

natural area landscape mountain hill cloud erosion geological formation nature tourism tourist person group overview twilight barrier way relief national park stoneware unesco's world heritage tourism facilty july sedimentary rock zhangye national geopark naturalness area landform earth's crust sky meteorological phenomenon atmosphere ecotourism tourism journey leisure individual enumeration shot atmosphere (ambiance) infrastructure transport environment protection environment management biodiversity management environment mineral matter matter (substance) month of year rock gansu (province) china east asia far east asia continent nature natural areas ecosystem ecosystems landscapes panorama panoramas mountains hills hillside hillsides cloudy clouds cloudy sky erosions wear (geology) geological formations geologic form geologic forms tourists human beings persons human being human presence human presences human humans groups overviews global sight global sights full length dusk fence barriers fences ways path paths reliefs national parks sensitive natural areas sandstone world heritage site tourism facilties sedimentary rocks china danxia danxia landform of china