These rocks are erratics, glacial deposits/boulders left by the ice sheet which covered this area during the last ice age. They are sitting on the shore of Rough Island, at Island Hill in County Down, N.Ireland. The Island sits in Strangford Lough, and is located between the towns of Newtownards and Comber. These rocks cannot be seen at high tide as they completely covered by the water from Strangford Lough. The feature in the background is Scrabo Tower and it sits on another glacial feature called a Crag & Tail. This image was captured on a Canon EOS 550D with a 17-40mm lens.