It starts at the top of a mountain. Not the novel itself, but the idea for the novel. The mountain is Errisbeg, on the coast of Connemara in County Galway. It’s an ugly lump of a thing, pocked with prickly yellow gorse and patches of swampy bog, but the landscape it commands is magnificent. The face of the mountain looks directly down on the back-to-back beaches of Dog’s Bay and Gurteen Strand. To the east is the lovely village of Roundstone. The Ballyconeely and Erislannan peninsulas are to the north-west, and beyond them lie the beginnings of the Atlantic, dotted with small islands.