DAHL—… Oddly enough, the best-known aspect of this sector is Billibotton, a semilegendary place about which innumerable tales have grown up. In fact, a whole branch of literature now exists in which heroes and adventurers (and victims) must dare the dangers of passing through Billibotton. So stylized have these stories become that the one well-known and, presumably, authentic tale involving such a passage, that of Hari Seldon and Dors Venabili, has come to seem fantastic simply by association …

ENCYCLOPEDIA GALACTICA