I located this cache to memorialize a small piece of Littleton history. In the spring of 1991, a student pilot was out for a training flight in a light aircraft with his instructor. The plane experienced engine trouble some miles west of here, and since they couldn't make it back to Centennial Airport, they were directed to attempt an emergency landing in the main field of Ketring Park. Unfortunately the flyers couldn't get their speed and elevation down in time to land there, so (still heading east) they managed to fly through the trees, the plane made a hard landing in the small meadow in the northeast corner of the park, flipped once end-over-end, and slid (upside down and tail first) into the garage of the house on the NE corner of Lakeview & Aberdeen. Fortunately no one was home at the time; meanwhile the pilots walked away from their battered craft with just scratches to show for their adventure (in the nick of time too, as the plane soon burst into flame in true cinematic style).
This cache is located at the best camoflaged spot I could find near the crash site (still, the houses to the east have a pretty fair view of the site, and there are generally people walking / playing in the park, so do be discrete).
If you'd like more information on this accident, it's available on the NTSB web site here (thanks for the lead, BeRad!).
The cache is about the size of a pill bottle (so, log-only), in a slightly larger bit of camouflage. You'll need to bring your own pen / pencil for the log.