
I used a few techniques to edit this image. I increased the clarity in Camera Raw and then converted it to greyscale. Then I used the Split Toning panel to adjust the sliders under the Shadows menu.

I tried the quad toning technique to enhance this image. I increased the clarity and other tones in Camera Raw and then changed it to greyscale mode. Then I opened the Duotone menu in Photoshop and chose a custom preset that I thought looked nice.