"Monument Valley" Glow in the Dark Canvas Wall Mural ~ 8 feet by 8 feetThis "Monument Valley" wall mural cannot be seen in the day or with the rooms lights on. All you see is a plain white canvas mounted on the wall! This image appears in total darkness. The rare earth phosphors that I use absorb light energy by day and slowly releases that light in the dark creating this glowing image in total darkness. It glows all night long night after night for decades!