De Beers has filled the decommissioned Victor Diamond mine, in northern Ontario, Canada, with almost 12 billion gallons of water and turned it into a lake. Virtually nothing now remains of the mine, which opened in 2008 and closed in May 2019. Over its life, more than 8.2 million carats of diamonds were recovered at Victor. It was identified in 1987 as Canada's first economically viable diamond deposit, and De Beers Group Canada spend $2.6 billion building and operating it during its lifetime.
