the arsenic labyrinth at botallack mine , botallack mine, cornwall uk

afternoon arch area arsenic bbc blue botallack britain chimney cliffs coast cornish cornwall film great heritage historical industiral industry kingdom labyrinth landmarks location mighty mine mining most national now october one owns penwith perched photographed poldark recognisable series site sky sunny tin trust unesco united west which wild world nature natural landscape rural tourist tourism travel holiday destination vacation attraction visitor daytrip excursion outdoors walk walking hike hiking south coastal footpath path sw