These photos by Martin Rietze appear to be of landscapes from another planet. They were in fact, of course, taken right here on planet earth. From beautiful light shows provided by volcanoes to strange rock formations, these photos seem to be from some alien planet.
A cone overflow at night from Ol Doinyo Lengai volcano in Rift Valley, Tanzania. Lengai is the only active sodium carbonate volcano in the world. This lava is liquid like water.