across hathersage moor to the remains of cark wark iron age fort in derbyshire

britain carl wark fort derbyshire england hathersage higger tor hope valley peak district autumn autumnal boulders bracken cloudless countryside deserted fall fern fortress grass gritstone heath hill hillfort hillside iron age landmark landscape military morning natural nature people october outcrop peaceful pond pteridium aquilinum rock rocks rural sandstone scenery scenic sieglingia decumbens sky slope stone sunlight sunshine tranquil view water wildflower moor cark ponds remains