Great Iyu Island
Great Iyu Island is a small uninhabited island in the Strait of Malacca, about 4.5 km north-west of Little Karimun, about 50 km west of Singapore, and about 800 m south-west of Little Iyu Island. The two Iyu islets are known as The Brothers. The island belongs to the Karimun Regency of the Riau Islands Province of Indonesia.
Great Iyu measures about 250 by 150 m and its highest point is about 45 m above sea level.