The other day we had snow. That's not unusual in Colorado. What I found unnerving was the footprints I saw yesterday morning. Somebody had walked from the trail that runs behind my house over to my back porch. The snow back there is at least two feet deep. Somebody went to considerable effort to come over through the snow. Why was somebody on my back porch? I guess I'll never know. Dogs run around back there sometime. But, these were obvious boot prints made by human beings.