The sound of the falling water!!!

Waterfalls wouldn’t sound so melodious if there were no rocks in their way. Waterfalls are created when water flows over a steep drop in elevation, such as a cliff or rocky outcropping. The sound of the falling water is produced by the water crashing against the rocks, creating a melody that can be quite soothing and peaceful. Without rocks in the way, the water would simply flow over the edge of the drop in elevation, creating less of a sound.