" Solotol is a city of arches and bridges, where steps and pavements wind past tall buildings and lance out over steep rivers and gullies on slender suspension bridges and fragile stone arches. Roadways flow along the banks of water courses, looping and twisting over and under them; railways splay out in a tangle of lines and levels, swirling through a network of tunnels and caverns where underground reservoirs and roads converge, and from a speeding train passengers can look out to see galaxies of lights reflecting on stretches of dark water crossed by the slants of underground funiculars and the piers and ways of subterranean roads. "
― Iain M. Banks , Use of Weapons (Culture, #3)