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Thunder Bay National Marine Sanctuary and Underwater Preserve is a United States National Marine Sanctuary on Lake Huron's Thunder Bay, within the northeastern region of the U.S. state of Michigan. It protects an estimated 116 historically significant shipwrecks ranging from nineteenth-century wooden side-wheeler paddle steamers to twentieth ...
Passage in Secret Caverns. Secret Cave is part of a larger cave system, the Secret-Benson Cave System, which consists of 6,200 feet (1,900 m) of passage. [4] [5]The show cave starts at the discovery entrance, which has mostly been sealed with concrete with a small opening to allow bats to enter and exit the cave, although bat populations has been low since an outbreak of White-nose syndrome in ...
Thunder Bay Island lies just east of North Point outside the bay. The wildlife in the Bay's waters are protected as part of the Thunder Bay National Marine Sanctuary . The name is the English translation of the French Anse du Tonnerre , which appears as early as the map of Franquelin in 1688.
Hornbill's Secret Cave; Lagang's Cave; Lascaux Cave in Malaysia; Laing's Cave; Leopard Cave; Lori's Cave; Metric Cave; Niah Caves; Pepper Leaf Cave; Perseverance Cave; Racer Cave; Sakai's Cave; Sarawak Chamber; Snail Shell Cave; Snake Track Cave; Solo Pot; Stone Horse Cave; Tardis Cave; Thunder Cave; Tiger Cave; Turtle Cave; Ulat Cincin Cave ...
The Sleeping Giant is a series of mesas formed by the erosion of thick, diabase sills on Sibley Peninsula which resembles a giant lying on its back when viewed from the west to north-northwest section of Thunder Bay, Ontario, Canada. As one moves southward along the shoreline toward Sawyer's Bay the Sleeping Giant starts to separate into its ...
On some old maps, Michipicoten Island is shown as Isle Maurepas, after the French minister of Marine Jean-Frédéric Phélypeaux, Count of Maurepas. [13] The word Michipicoten is an Anglicization of the original Ojibwe word Mishipikwadina, meaning "big bluffs" in Ojibwe, and is a reference to the geography of the nearby Michipicoten River. [14]
Inside the caverns. Howe Caverns is a solutional cave formed by the dissolution of limestone rock. [2] The cave, like many on the Helderberg Plateau, such as Secret Caverns, which is also operated as a show cave, and Tory Cave, is composed of thickly bedded Lower Devonian aged Coeymans Limestone and thinly bedded Upper Silurian aged Manlius Limestone, both part of the Helderberg Group.
Bradda Head is a rugged headland overlooking Port Erin, a popular seaside village in the south-west of the Isle of Man, in the British Isles. Rising to a height of 382 feet (116 m) above sea level. Rising to a height of 382 feet (116 m) above sea level.