Here is some interesting evidence of what some people do when visiting Chief Wambdi in Sioux City, IA. This was taken on a hill that is to the right of the burial monument. As you past the War Eagle burial site you will come across a trail by a broken fence. In this area there was another condom wrapper of the same brand and make. I guess there was a couple who decided to explore this out of the way place in their own manner in multiple locations.