This is an Irish folk tale (legend/fairy tale tradition) explaining the origin of a real geographic feature — a lake ("lough") near Cork — through mythological causation. A proud king named Corc seals off a magical spring on his palace grounds, hoarding its pure water from the common people. At a grand feast, his daughter Fior Usga (meaning "Spring Water") is sent to fetch water from the well; she falls in while filling a golden vessel, and the long-confined water bursts free, flooding the valley and submerging the entire palace. Distinctively, the tale frames the catastrophe as divine judgment on the king's selfishness toward the poor, while softening it with enchantment: the court was not drowned but continues its eternal banquet beneath the water, and a redemption quest remains open — whoever retrieves the golden vessel can break the spell. The storyteller grounds the supernatural narrative in verifiable geography, directly challenging skeptics to visit the lough and see submerged towers for themselves.