Lewis is the largest and most northerly of the Hebrides, forming one island with Harris. Most of its wild landscape, rising to 1,800 feet (549 m) in the south, is cloaked in peat bog – hence its Gaelic name ‘Leodhas’, meaning ‘marshy’. The Callanish Standing Stones and well-preserved Carloway Broch stand testament to its occupation since prehistoric times. The port of Stornoway is the only town.