What you see above isn’t a Photoshop effect, and it’s not an artifact of the satellite sensor or an odd reflection of the sun. It’s the result of a natural ice dam created by the Perito Moreno Glacier in Patagonia, which is blocking the muddy waters of Brazo Rico on the left (the south, since the image is rotated) from the bluer Lago Argentino on the right (the north). Surreal, isn’t it?