Sasquatch (Bigfoot) or D. B. Cooper Mystery Solved?

This photo was taken on a clear December 31st 2007 day in the midst of the rainy season here in the Seattle area. The photo appears to attest to Perry Como's line "The bluest skies you've ever seen are in Seattle" from his song "Seattle" which was the theme song for a short-lived TV series titled "Here Come the Brides". The fresh snow on the mountain backed by the blue sky inspired me to take the photo.  Since, I was not using a tripod to steady the camera, I took several photos and later used software to compare the photos side-by-side. To determine which photo is most clear, you usually have to zoom-in to see the detail better. As I did this, I noticed a small dark spot to the left of the right peak of Mount Si's twin peaks. It caught my eye because unlike everything else near the peak it did not appear to be snow-covered. Even though I have reduced the resolution of the photos on this website, I think you can probably still see the dot that intrigued me. See the note below the photo for the next clue as to who or what the dark spot really is.

Since the photo above was taken at the full zoom capability of the lens, I needed to crop the photo and in effect enlarge the area with the dark spot. What it revealed is something you would not expect to see if you randomly took a photo of a mountain. Click to see the next photo and what the dark spot really was.