The Terminus is the space between space. It is said that entire worlds exist in the cracks of mountains, where your foot meets the gound, where shadows streach out, or in the eye of a needle. The Terminus is the ever changing space that exist at the edge of everything, and is often use by travelers to travel impossible distances. However, traversing this realm is not with its dangers. The landscape often shadows what ever land it borders, however it is capricious at best, and is inhabited by denizens not ruled by any athourity.
Many scholers often mistakenly attribute the Terminus as the vast black of space that the whole of reality rest in, but a more accurate evaluation would be a change in perception, a hoizon to conciousness, and perhaps the edge of oblivion.