Along with this spectacular photo of Victoria Falls, comes some marvelous writing by Michael Joseph Gross in Chasing the Ultimate Waterfall
Later I realized this was the reassurance of a waterfall. Here, our everyday elixir, the substance of which we are literally made, seems to be shattered, and immediately, perpetually, restores itself.
All the glory and excitement of this place, and of any waterfall, has just one natural purpose: it's the river's way of getting back to normal. A waterfall occurs at the rift between a stream's force and its path. It is simultaneously a mistake and a correction, existing in order to erase itself.