Crafe Tec Heydra was a planet described as being "far away" and "across the universe" from the Earth.
On the world, there existed at least one mountain, a side of which contained carvings and hieroglyphs that served as crude depictions of the Last Great Time War, a conflict that was invisible to most species in the universe, between the Dalek Empire and Time Lords. Indeed, the markings depicted the clash between a species of metal, representing the Daleks, and one that was organic, representing the Time Lords. The depiction included a a great explosion and only one survivor leaving the wreckage of the War. However, the mountain left a written message as well, as the phrase "you are not alone" was written under the survivor. (PROSE: Meet the Doctor)