Mushroom rocks form when a more resistant layer of sedimentary rock sits above a softer layer. The wind erodes the lower section of the rock more than the upper section, resulting in a narrow base and a wide upper part. Rock mushrooms abound in the Ennedi region of North Eastern Chad where the sands of the Saharan desert sculpt and shape them into intriguing shapes. Juxtaposed against the night sky they form the perfect foreground against which to frame the gorgeous Bortle 1 Saharan skies…