texasrobo

 "As I understand it, one of the elements for locating a rock cairn site is being on a prominent rise with a broad viewshed...

http://www.flickr.com/photos/texasrobo/5019390878/sizes/o/in/photostream/

 This was the initial feature observed at FS 1, a rock cairn (which is essentially an intentional rock stack). These kinds of features may have cultural significance to the native tribes, and finding these types of features and sites is the goal of this stage of the survey.

I don't know what significance these features have," writes texasrobo at: http://www.flickr.com/photos/texasrobo/5019387300/in/photostream/