Although this may look like a hostile alien life form, it actually a complex line of sand dunes near the northern ice cap of Mars. This image is from NASA Mars Odyssey, one of an All Star set.
Mars Odyssey All Stars: Reptilian Dunes
Although this may look like a hostile alien life form, it actually a complex line of sand dunes near the northern ice cap of Mars. This image is from NASA Mars Odyssey, one of an All Star set.