Greenmantle — Charles de Lint

Not far from the city there is an ancient wood, forgotten by the modern world, where Mystery walks in the moonlight. He wears the shape of a stag, or a goat, or a horned man wearing a cloak of leaves. He is summoned by the music of the pipes or a fire of bones on Midsummer''s Evening. He is chased by the hunt and shadowed by the wild girl.