Some articles on llunet:

Taran Wanderer - Plot Summary
... so Orddu merely tells him of an alternative the Mirror of Llunet in the far east Llawgadarn Mountains will show him who he is ... Their hosts suspect a quest for treasure and offer guidance to Llunet, in exchange for a share ... tells Taran the way to the Mirror of Llunet he knows it, but has never visited, for he knows who he is ...