Computer graphics
Agostina Ravera (agosvascolet)
Artist's deviantART profile http://agosvascolet.deviantart.com.
Though the images was named "Escher inspired", this version of endless waterfall significantly differs from Escher's famous version.
Escher inspired
The image was found at http://agosvascolet.deviantart.com/art/Escher-inspired-551195888.