It seems like you're referring to a concept related to a "lost city beneath the sea," which could allude to myths, legends, or even actual historical discoveries of submerged civilizations. The most famous of these is the legend of Atlantis, a city said to have been advanced and wealthy before being submerged in a cataclysmic event.

Could you clarify if you're referring to a particular story or if you'd like to explore details on underwater cities, ancient myths, or related topics?