coast cliffs at the keen of hamar on the island of unst in shetland, uk

419 1000 ago ancient balta baltasound beautiful bedrock blue cliffs coast coastal coastline colorful colourful complex eroded erosion europe formed hamar island islands isolated keen landscape metamorphic metaperidotite million nature north ophiolite outdoor people remote rock scenery scenic scotland scottish sea seascape shetland shetlands sky sound summer tourism travel unst vacation view water years