The old Lafarge quarry/pit in Dundas Ontario, west of Toronto is human-made, and not a natural formation like Vasquez Rocks.

As it’s at the bottom of the Niagara escarpment, it does even so cut through some interesting geological formations, including an ancient reef.

It seems on its way to becoming an equally recurrent location for other worlds in the new shows. Discovery has used in several seasons season - MU rebel camp, Talos IV, although it did look quite different in winter with Carl the Guardian of Forever.