In May 2016, After spending a few days in Palouse wheat field photo shooting, My friends and I stopped over in Palouse Falls for shooting with Milky Way in new moon night. We met a photographer who had strong light for light up the Fall at night.
After the Milky Way showed up, I set my camera near parking lot where a little far from the Falls.
The Falls could be seen by light up, but my location was so dark, and I did not expect to capture the canyon, because so dark and no artificial light.
I set my camera ISO16000 and 25.0 sec. for shooting dark canyon and the sky.
At developing for the photo, I was surprised that the canyon cliff can be seen with adjustment of exposure and other settings in Lightroom.
I was also happy to capture the Milky Way and green colors from Airglow.
Used camera:Nikon D4S, Lens: Nikkor 14-24mm f/2.8, Focal length 14mm,ISO 16000, 25sec.at f/4.0