A few hundred feet down the trail from the piko rock was a rough stone wall running for a few hundred feet along the edge of a gulch. Two theories on why it is there. One a cattle wall to keep them from wandering down the steep slope, my guess. One of the archeologists along with us also suggested that it might have been built to slow down water running into the stream below. This might catch some silt and also perhaps lessen the erosion of the slope.
This is a panorama taken by the wall above.
