The picture is very rarely seen. It is not a funeral procession as you guessed, rather it is a picture of a ceremonial gathering that occured during the summer solstice (which occurred right where you were standing while taking the picture). in the early morning on the day of the summer solstice the circle in the middle of your photo is illuminated by the sun. If your picture was slightly bigger, you would see the people in the procession are wearing different headdresses (ducks, deer, etc..) There are many other archeo-astrology sites in the Comb Ridge area. Many "sun-daggers" and "sun circles" which were used by the Anasazi to mark planting and harvesting cycles.