Canada’s own deep geological repository would be built more than 500 metres underground, surrounded by a natural barrier of solid rock that has been disconnected from the water table for millions of years. To visualize that depth, imagine an excavation more than five times as deep as the House of Commons Peace Tower is tall. The NWMO has been working to identify a site for the deep geological repository since 2010. Twenty-two municipalities and Indigenous communities expressed interest in exploring their potential to host it.