At first glance, there would seem to be nothing more tangible than a landscape. An arrangement of physical objects, spread out before you, traversable, understandable, concrete in every sense. Yet when you start to think of a specific landscape, things start to cloud. What is a landscape if not the play of light on a hillside, the gathering of clouds on a horizon, the mood of the image as seen through your eyes, in your time, with your colors? All of these things are transient, unfixed, perhaps impossible to repeat. A landscape as a formation might be concrete, but a…