It sounds like you're referring to a type of swimming pool design featuring a cascade or waterfall effect. A "Swimming Pool Cascade Fall" is typically an aesthetic and functional addition to a pool, where water flows from an elevated structure or rock formation, creating a beautiful visual effect as well as soothing sounds of running water.

Such waterfalls can be built from various materials such as natural stone, concrete, or even glass, and can vary in style from a gentle stream to a dramatic waterfall. Cascade falls can also be combined with lighting features for nighttime enjoyment.