The lodge, the terrace, the mountains and the plain were on an Orbital. Humans had built this place, or at least built the machines that built the machines that… Well, you could go on and on. The Plate of the Orbital was almost perfectly flat; in fact, vertically it was slightly concave, but as the internal diameter of the completed Orbital—properly formed only once all the individual Plates had been joined up and the last dividing wall was removed—would measure over three million kilometers, the curvature was a great deal less than on the convex surface of any human-habitable globe.
