I hope TMA Eds will forgive me adding a site I may never visit, but from what I have read so far it is a very intriguing place, little known, which may prove to be of considerable importance, and would appear to be in part contemporary with Ness of Brodgar. A tomb of unusual size. See also the separate eponymous entry for the nearby Iron Age part of this complex, and the link within it.
The Canmore entry for a most intriguing complex of Bronze and Iron Age structures which are under threat of coastal erosion and where excavation has taken place for several years.