Hidden underneath Llandudno's Great Orme is a sunken reservoir with towering columns and arched roofs. Known at the Fach reservoir, it came to the rescue of the population as the town grew.
Steeped in history, the Fach had a link to St Tudno, the sixth century patron saint of of the seaside town, who lived as a hermit and survived on spring water. But it now lies unused and forgotten beneath the Great Orme.
But for centuries the spring waters from the reservoir were used by the area's miners and farmers.
