Prickly Pear Cactus fruit

9/2/2012, Saguaro National Park East, Tucson, Arizona

[Links related to my post yesterday covering the Saguaro National Park Labor Day Run:  Diane of Desert Colors posted some great pictures of the start and she also provided a link to an outstanding short YouTube video made by her son that shows the beginning of the race -- the portion of the video showing the initial flow of runners down the steep hills at the start is not to be missed!]