Click to embiggen vastly Topographic radar images of two Hawaiian islands. Rainbows in a void. You can read more about the image at NASA’s gallery.
From The New Students Reference Work (1914), edited by Chandler B. Beach, associate editor Frank Morton McMurry. Scanned by Wikimedia Commons user LA2.
Click to embiggen. Image from "The Gateway to Astronaut Photography of Earth" at the Image Science & Analysis Laboratory, NASA Johnson Space Center.