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Castle Cape is a peninsula along the southeast shore of Castle Bay that forms the south entrance to Chignik Bay on the Alaska Peninsula, about 9.5 miles (15 km) southeast of Chignik, Alaska. The native name of the point was Tuliumnit, but locally called "Castle Cape" according to the U.S. Geological Survey in 1911.
This cape was first described in 1898 by Lieutenant Commander J.F. Moser of the U.S. Navy from the U.S. Bureau of Fisheries steamer Albatross, as "a high-turreted or castellated point”. Castle Cape is over 1200 feet (366 m) in elevation and the distinctive turreted formation and pronounced stratified rock banding serves as a famous landmark for ships. It is so well known that the U.S. National Weather Service has a separate coastal waters forecast for the area between Sitkinak Island and Castle Cape.
The Castle Cape Fjords consist of extremely rugged mountains deeply indented by the sea with rocks exhibiting a pattern of contrasting dark and light layers. These rocks belong to the Kenai formation and are exposed in the Chignik Bay region on the south side of the bay and southwest as far as Castle Cape. The formation consists of sandstones, shales, and conglomerates, with some thin beds of lignite. The thickness of the formation in the Chignik Bay region is at least 1,000 feet (305 m). Read more here and here. Download the latest version of the CoastView app and explore more of Castle Cape here: