corral derelict disused empty farm grass heather herd highland pen scotland sheep sheeppen stone upland wall bend burn hill horseshoe remote river rocks rural sky stream sunshine Torridon water blue bothy hide hut lookout photographer post shed skye view watch window asphalt centre drive hills lane lines New road route scenic tarmac Calluna footpath heath heathland landscape ling moor mountain natural nature Pembrokeshire plants track trail wales welsh coastline England gorse peace sea shadow shoreline slope spring wild clan dark Glens highlands lochs moody railway scottish steam train viaduct weather wet ascent fell grassland Mountainous landforms natural environment Natural landscape path tundra wilderness bush lake loch mountains pine rugged Scots shore trees