More minor details requested

To tell the truth, looking back over the recent pictures of tall truncated cone-shaped cairns, it is hard to tell Nancy's pictures apart from Norman's. The presence of a "niche" or recess seems to be reasonably established by these example. So what are the minor details around these cairns and are they also similar? What about the topography; is it similar? If so, we could start putting together a more comprehensive view of a these as one type of site.