This is Hidden Lake a State Natural area just a couple of miles from my office. It was in it's day a resort and this old quarry was the swimming pool with the main building up on the bluff overlooking the Harpeth River. All of the old stone steps that once connected the pool to the resort are still cut into the side of the quary.

Coverted with Channel Mixer in monochrome. Settings: 100 (red), -10 (green), 5 (blue) and constant set at -10.