Perhaps it’s called Svartifoss (Black Falls) because it shows itself on a black basalt cliff.
Bad Light Helps One See Clearly Here
Perhaps it’s because the red autumn birches turn black with distance, and still the fall flashes.
Autumn Rain Really Brings Out the Light of This Land
In either case, it’s not the cliff that is named but the water.
It seems that when blackness falls it is visible. Of course, that means it’s not black at all…
… or that whiteness is also a blindness, beyond human life. We marvel. Life, it comes from nowhere, flashes with life, and then returns to mystery.
Svartifoss in Its Pool of Birch Blood
Svartifoss, Skaftafell National Park, South Iceland