While looking down on Diablo Lake up in the Cascades, the light angle combined with the clearer water at that time of year meant it was possible to see the rocks beneath the surface of the lake around some of the islands that are in the lake. I hadn’t really paid much attention to these on previous visits. A long focal length allowed me to focus in on these islands and the hazards that lurk beneath the surface for unwary boaters. Better make sure that you are using the right landing areas and approach them appropriately. Otherwise, things look like they could get soggy quickly!