Mythago Wood (The Mythago Cycle, Book 1)

Ryhope Wood may look like a three-mile-square fenced-in wood in rural Herefordshire on the outside, but inside, it is a primeval, intricate labyrinth of trees, impossibly huge, unforgettable and stronger than time itself. Stephen Huxley has already lost his father to the mysteries of Ryhope Wood. On his return from the Second World War, he finds his brother, Christopher, is also in thrall to the mysterious wood, wherein lies a realm where mythic archetypes grow flesh and blood, where love and beauty haunt your dreams, and in promises of freedom lies the sanctuary of insanity.