Hi Fitz , this site is fascinating , any more info on possible date , provenance etc ? . The comments by Stanhope White were a bit naive , to tell if an alignment has any stellar or lunar orienatation the horizon must be taken into account . It's certainly possible that none are there but critical info is absent . he also gets the "Temple " bit wrong when referring to Nether Largie , the locals don't call it the temple and Hadingham never said they did , but just across the road is Temple Wood stone circle , looks like conflation and confusion . Hopefully his figures would be more accurate and interesting to see . I'm a bit puzzled by the Frank Elgee sketch and assume that the northing is absent and is not ,as is sometimes the case , from top to bottom of the page . If there are "close to cardinal points " then there is the possibility of an equinoctial orientation .