panorama view of omarama clay cliffs geological natural erosion silt and sand rock formation in canterbury new zealand

omarama clay cliffs rock formation canyon nature landscape zealand travel landmark south island mountain breathtaking bizarre stunning pinnacles tourism geological erosion geology natural sandstone stone sand environment climate change gravel history ravine clouds hills panorama outdoor ahuriri river paritea silt sediment gorge narrow pillar rural remote backcountry countryside scenic reserve view canterbury