karst landforms, steep slopes and green valley in the mountains

nature outdoors mountain cantabria valles pasiegos green scenic scenery landscape erosion escarpment scarp limestone karst karstic cliff landform stratified rock rocky strata stratification glacial geology sediments layering steep vertical rough relief slope facies meadow pastures miera valley valle del spain grassland natural environment summer mountaineering peak summit spring cantabrian mountains wearing away lines landforms slopes northern