The Pingualuit Crater (French: cratère des Pingualuit; Inuit, “pimple”), formerly called Chubb Crater and later New Quebec Crater (cratère du Nouveau-Québec), is a young impact crater, by geological standards, located on the Ungava Peninsula, in the administrative region of Nord-du-Québec, in Quebec, Canada. It is 3.44 km (2.14 mi) in diameter, and is estimated to be 1.4 ± 0.1 million years old (Pleistocene). The crater and the surrounding area are now part of Pingualuit National Park. The only species of fish in the crater lake are arctic char, Salvelinus alpinus. The crater is exposed to the surface, rising 160 m (520 ft) above the surrounding tundra and is 400 m (1,300 ft) deep. The 267 m (876 ft) deep Pingualuk Lake fills the hollow, and is one of the deepest lakes in North America. The lake also holds some of the purest fresh water in the world, with a salinity level of less than 3 ppm (the salinity level of the Great Lakes is 500 ppm). The lake has no inlets or apparent outlets, so the water accumulates solely from rain and snow and is only lost through evaporation. It is one of the most transparent lakes in the world, with a Secchi disk visible more than 35 m (115 ft) deep.