J.R.R. Tolkien: Lord of the Rings 'Middle-earth' unveiled

It is a fantasy land through which millions have walked in their own imaginations.

Now fans of Lord of the Rings can see Middle-earth as its creator J.R.R. Tolkien did.

A previously unseen map, drawn by the author's son Christopher and added to by Tolkien himself, is going on display for one day only.

Duncan Kennedy reports.