In 1968, Hydro-Québec completed the giant dam which is now known as the Daniel-Johnson Dam on Quebec’s Manicouagan River. The structure altered the landscape around one of Earth’s most recognisable impact sites: a crater formed around 214 million years ago. However, the circular Manicouagan Reservoir that is visible today did not exist when the dam was completed. Before the construction, two separate crescent-shaped lakes occupied parts of the ancient crater, and as water levels continued to rise after the completion of the dam, those previously separated water bodies joined, eventually forming the ring-shaped reservoir known as the “Eye of Quebec.”
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