A cross-section of Lewis would see mostly sandy beaches backed by dunes and machair on the Atlantic west coast, giving way to an expansive peat covered plateau in the centre of the island. The eastern coastline is markedly more rugged and is mostly rocky cliffs broken by small coves and beaches. The more fertile nature of the eastern side led to the majority of the population settling there, including the largest (and only) town, Stornoway. Aside from the village of Achmore in the centre of the island, all settlements are on the coast.