Definitely a flat earth feel. I love the contrast of the hard, cold sharp lines of the water and the softness of the mist. This would be a great shot for that adorable little yellow rubber ducky... but I think that would be littering.
Love this simple shot. Nice lighting. Love the blue/grey mist rising in upper third and the light reflection from the water on the right and and the darkness on the left. Like the green translucence where the water is just going over the falls.
Dizzying. Brings back memories!