Monach Islands The Monach Islands or Heisker are about 10km off the coast of North Uist. They are composed of three main islands and many skerries. Many Grey Seals come ashore her in autumn to have threir pups, but the islands are now uninhabited by humans. Shillay Rocky Shore Monachs from South Shillay Lighthouse Shillay Shore Shillay Lighthouse Shillay Lighthouse Shillay Lighthouse Shillay Shore Shillay Shore Shillay Shore "Bowen" at Shillay Shillay Lighthouse