Designed by J.R.R. Tolkien’s son Christopher and included in most editions of the Lord of the Rings trilogy, the map of Middle-Earth is one of the best-known examples of fantasy cartography. The iconic map shows the fictional continent in which the action of the three books takes place, from Forodwaith in the north to Haradwaith in the south, and the Gulf of Lune in the west to the Sea of Rhûn in the east (was Middle-Earth deliberately framed to rhyme?)

Equally delightful, if not as yet as iconic, is this flow chart of Lord of the Rings. It charts the itinerary of the story’s main characters, individually and in group, showing when they meet, separate and rejoin each other. The progression is from left to right, not only in tune with the traditional (Western) reading direction but also mirroring the trajectory in the story itself, which starts in the Shire on Middle-Earth’s western edge and leads to Mordor in the east.

The geographic parallel only partly holds up: at the very end of the story, after they have returned to the Shire, some members of the Fellowsh