Socotra Island, off the coast of Yemen. It’s been called the most Alien-looking place on Earth. Socotra is one of the most isolated land-masses on Earth that was once part of a continent. (In other words, it wasn’t formed by a volcano.) It has been disconnected from the main land for 6 million years, which has given evolution plenty of time to chart its own course without any influence from most common species found on continental land masses.