Great Slave Lake

Great Slave Lake
Also known as the Grand lac des Esclaves after the Slavey North American Indians, Great Slave Lake covers 11,000 sq miles in the Northwest Territories of Canada and goes down to 2,015 feet, making it the deepest lake in North America. Because of the low temperatures in the area, for about eight months of the year the lake is at least partially frozen, while during winter the ice is so thick that trailer trucks can pass through.
There is currently no physical evidence to suggest that an unidentified large creature is living in the Great Slave Lake, but many people traveling to the lake have said otherwise. Some talk about a large hump in the water, usually mistaken for a rock until it submerges, or an alligator-like body, with a head like that of a pike.
From his house, a Roman Catholic priest even saw a large dragon-headed creature that rose six to eight feet above the water and moved rapidly onto the shores of the lake. The creature was subsequently named Ol’Slavey.