The Manicouagan is a large annular lake located in northeastern Quebec, Canada. It was formed by the impact of a meteorite approximately 214 million years ago, creating a unique circular shape. The lake is about 70 kilometers in diameter and is surrounded by a ring of hills, which are remnants of the impact structure. The Manicouagan Reservoir, created by the damming of the Manicouagan River, is one of the largest artificial lakes in the world. This reservoir plays a crucial role in hydroelectric power generation for the region. The area is also known for its natural beauty, attracting outdoor enthusiasts and researchers alike.