Water Walking

I spotted these rapids from 90 feet above and thought the pattern might make for a good slow exposure in the Gulf Hagas in the mountains of central Maine.  The slate lined gorge winds about 3 miles, creating many large named falls and many more un-named cascades such as these.  A hiker-free image didn't seem to have the attraction as one with a hiker for scale, so I set up my self timer and hoped the water flow would send my camera into the drink.. Used a couple of rocks suspended from the center column as insurance to weight it all down.  I needed to place my self in the shadow portion of the gorge behind me so as not to blend into the background.

810D, f16, ISO 40, 3 stop ND filter, 0.5 sec. exposure