abraded bare bleak boulder break broken canada eroded erosion hard high layers montane mountains natural nature pieces rock Rockies rocky shards splintered stone summit terrain weathering worn beat coast cottage crane crash England fierce Great Britain landscape pound rage sea shore storm stormy surf surge tide water wave cloud colorado cumulus debris hike hiker hiking mountain path range rugged sky track trail Trek usa view walk blue dwindle edge icy July margin melt norway norwegian plants plateau retreat snow thick vegetation white coastline distance distant island islands isthmus land Maddalena mediterranean pink rough Sardinia shoreline spit craggy far height jasper panorama peak river Rocky Mountains valley