Mysterious Island - Wolfsong, Book 3 (Unabridged)

Book Three in Saviour Pirotta's Wolfsong trilogy, set in Neolithic Age Britain.
Wolf's rival, Rain, has stolen his precious amulet! Furious, Wolf is determined to retrieve it but following Rain takes him and Crow on a journey far beyond the world he knows-over oceans to mountains filled with fire and a mysterious island at the centre of the world.
Forces of great power reside there, in temples and goddesses, which Wolf has never seen before. Only, Wolf's greatest test may come from within, and his hardest battle could be against himself.