The most westerly of the Small Isles, Canna is five miles long and one-and-a-quarter miles wide. Its cultural background, archaeology and ornithology make it one of the most interesting islands in the Hebrides. Sustainable farming and crofting systems are carried out on the island, which is a Special Protection Area for its large population of seabirds, especially shags, which nest in the cliffs of its dramatic shoreline. Canna is also a Special Area of Conservation. Pony trekking is available.