With its 100 km diameter it is one of the largest on the surface of Earth, forming an annular lake that covers an area of 1,942 km². In its centre is the René-Levasseur Island with Mount Babel as the highest point.
Approximately 214 million years ago, an estimated 10 km wide meteorite impacted our planet at between 12-30 kilometres per second, forming the Manicouagan Impact Structure.
This is the fifth largest reservoir by volume in the world.
