No, it's not a waterfall

The images are spectacular (and unfortunately the phenomenon has been destructive, though without loss of life), but the picture that is being featured is NOT a waterfall.  It's a lava-fall.

But still, this is the title:  Lava Waterfall Captured in Stunning Photo

As a bonus, here's a remarkable video from the U.S. Geological Survey:



And to be clear, this is not a river. It's a lava flow.