There is no scientific agreement on what exactly causes this rock discolorization . The theories and test say it is of a organic nature, similar to lichen, but, this is contradicted in strange examples all over, that show it’s presence in peculiar locations amongst other nearby rocks, including here at Valley of Fire and Newspaper Rock and Signal Hill (area depicted in newspaper rock).
On the 55 degree line of Sacred Camelback Mountain and the Casa Grande Ruins , and, the 22.5 from Newspaper Rock
Steps seen in Newspaper Rock, The Hopi Tribe Prophecy Rock, The Mars Geoglyph Riddle, Chaco Canyon Pictogragh Rock
Exposing the ill-logic of the ” debunking” of the Miracle Stairway.
Note the spiral geoglyph of Blythe, (see pages)