Is it a ridge? Or a valley?🤔 To the plain eye, this sat image of Tassili n’Ajjer National Park could be either. But it’s actually a plateau of canyons in the Sahara Desert covering an area of 72,000 sq km. Sometimes satellite images can play with your eyes in a phenomenon known as relief inversion. Which one did you guess? 📸: PlanetScope • Algeria • November 3, 2022 #planet #planetlabs #satellitephotography #aerialphotography #satellite #earth #nature #birdseyeview #instadaily #picoftheday #travel #explore #space #earthfromspace #satelliteimagery