Opened in 1963 and closed in 1990, this iron mine stretched over 4,000 acres of land, and featured six open pits. The deepest of these pits was 600 ft. The largest pit was almost a mile in length.
This site was also the centre of heated debate when it was suggested that Toronto send its garbage as landfill in these excavated pits. Plans for this were already being drawn up as early as 1989, before the mine had even closed.