Interesting stuff. I think this is really about stuff that happened, a LONG time ago. I offer http://campground-search.com/CampgroundDetails.aspx?cgid=120 as something of possible interest. The remains of what was, once, the greatest waterfall in the entire world - 400ft high and over 3 miles long. If you google "dry falls" you can get a LOT more pictures. This is in Eastern Washington state. My wife and I have gone there several times - pretty amazing.