sand beach and steep cliffs in the broken coast

liencres costa quebrada cantabria broken coast beach sea sand golden cliff erosion coastal bedding coastline rock rocky outcrop litoral substrates paleobeach sedimentary rocks landscape seascape scenic scenery sandstone weathering aptian albian cretaceous nature outdoors natural environment sustainability geology fold synclinal eroded limestone canallave valdearenas spain dunes park stratification travel cantabrian wild steep cliffs sandy