Pingualuk Lake

The Pingualuit Crater, formerly called the "Chubb Crater" and later the "New Quebec Crater", is a relatively young impact crater located on the Ungava Peninsula in the administrative region of Nord-du-Québec, in Quebec, Canada. It is 3.44 km in diameter, and is estimated to be 1.4 ± 0.1 million years old. The crater and the surrounding area are now part of Pingualuit National Park. The only species of fish in the crater lake is the Arctic char.

Source: Wikipedia