Lewis and Harris MacLeod, and those on Lewis being referred to as from the clan MacLeod of Lewis. Lewis is also the ancestral home of Clan Morrison. The Lewis chessmen is a famous collection of 12th-century chess pieces, carved from walrus ivory and mostly in the form of human figures, which were discovered in Uig in 1831. A major industry on the island is the production of Harris tweed fabric, which is handmade on the island; by law only fabric produced in the Outer Hebrides can be called Harris tweed. The Lewis Trilogy of novels ("The Blackhouse", "The Lewis Man" and "The Chessmen")
Lewis and Harris comparatively flat, save in the south-east, where Ben More reaches , and in the south-west, where is the highest point. Lewis contains the deepest lake on any offshore island in the British Isles, Loch Suaineabhal, which has a maximum depth of 66.7m (226 feet) and an overall mean depth of 32m (108 feet). Until 1975, Lewis belonged to the county of Ross and Cromarty and Harris to Inverness-shire. The entire island group is now administered by , the Western Isles Council. Other nearby inhabited islands in the Lewis and Harris group are (Great Bernera) and (Scalpay). (Taransay) and (Scarp), now