bedrock berlin block boulder crag firm foundling geology germany grunewald hard heavy large large rock large rock foundling massive megalith monolith monument nature old outcrop rock solid stone tree unshakable granit grey pavement paving rocks texture big granite huge pink Sardinia landscape rough rugged green lichens natural Pembrokeshire wales welsh blue building cliff coastline enormous lighthouse mediterranean promontory sea shore warning brooding cloud cloudy distant madeira magnificent mist mountain mountains sheer size steep volcanic ancient conservation dinosaurs display displayed evidence feet flip-flops footprints fossils geological historic impressed impression impressions imprinted prehistoric Prehistory Preserved record sandals thongs toenails toes tourism tourists tracks