It’s a walk down memory lane for weatherman Derek Brockway as he climbs the Nash Point lighthouse he used to visit as a child. Derek’s coastal walk takes him along Glamorgan'sJurassic coastline. On the way he goes fossil hunting, searches for an elusive chough and learns the story of a pregnancy-testing frog. He begins his walk at St Donat’s Castle, once owned by newspaper magnate Sir Randolph Hearst, which became a party palace for the rich and famous.