blue cloud clouds colors eu galicia green horizon horizontal horizontally line linear mount mountain nature ocean plants rock rocks sea sky solid Spain unbroken water white autumn autumnal brown heather highland highlands hill hills lake loch Maree mountains rive road rocky scotland scottish tourism tourist view viewpoint activity art artwork chainreaction competition domino fall fallen formation group help instability massive old outside security stability stone stones strength success support away background break cliff coruna craggy erode eroded erosion estacas fracture lines saavem sheer steep stratify stratum texture wear wearimg