The Eastern Isles - Isles of Scilly Click on photo to see full resolution --> The Eastern Isles located between St Mary's and St Martin's on the Scilly Isles. The largest of the islands, Great Ganilly is just over 1Km in length. The other islands are Ganinick, Arthur, Innisvouls, Menawethan and Hanjague ©A30yoyo --> Related images