The sweeping expanse of Castle Rock is magnificent from a lookout at Twelve Apostles. This dramatic promontory is one of several seaside formations within the Twelve Apostles Marine National Park. The reserve covers 10.5 miles of coastline – both above and below the water – between Great Otway National Park to the east and the small town of Port Campbell in the west. Many of the remaining coastal turnouts along the Great Ocean Road are also part of Port Campbell National Park. These include Loch Ard Gorge, The Arch, London Bridge and The Grotto.