Brian and Mary,
I was volunteering in Rocky Mountain National Park near the Lulu City trail on the west side of the Park when I found the photo of your son and the message you had on the back. Your son's photo was inserted on a log in the Colorado river valley. A very beautiful place surrounded by mountain peaks and abundant wildlife.
The next day my wife and I hiked up Glacier Gorge on the east side of the Park and placed your son's photo on a tree by Mills Lake which looks into the gorge surrounded by Long's peak and McHenry's peak. It is a place that we enjoy hiking to.
We were sorry to hear about the death of your son, and feel that he would appreciate your idea to have his memory move around the globe.