Time Team (1994)

S17E8 Something for the Weekend - Tregruk Castle, Llangybi, Monmouthshire

Tony Robinson and his team become disoriented in the foggy depths of a Welsh forest while exploring one of Britain's largest castles. Their mission is to delve into the castle's enigmatic interior and uncover how this remarkable edifice was integrated into a system of fortifications established by influential English barons seven centuries ago.