One of my favourite ways of illustrating the changes at Cromwell is this "bathtub" analogy in which a clear water representation of the lake as it exists today is overlaid over the top of the yard as it historically existed. As with all of the georeferenced historical imagery we are using for these maps, it is a representation not reality. When the line closed the buildings were of course removed, the site was bulldozed, and you can't actually see the bottom of the lake because the water isn't clear as is shown here. Still, it is a good illustration.