Barnhouse is a solitary monolith covered by the lichens. It is in the environment close to Maeshowe, not far from the stone cecle of Stenness. It very well is seen road leading of Finstown to Stromness, on the line. It belongs to alignment Western East/with Cuween and standing stone, seen précédement.
This stone in is aligned more perfectly on the entry of the cairn of Maeshowe, approximately 700 meters in Western North/. In 1952, Peter C. Flett wrote: “The alignment formed between this stone of Barnhouse and the passage of entry of Maeshowe seem to have a particular significance. Celà is too remarkable to be simply accidental.” It is true that with the winter solstice, when the rays of the sun enter to deepest of maeshowe, the star is directly aligned with the top of the stone of Barnhouse. De Maeshowe, the line continues on the hill of Ward, on the ïle of Hoy, in a place where to lay down it sun is done 22 days before and after the winter solstice. This 3 weeks period is called by the “archéo-astronomers” such as Thom the month megalithic. Was the stone posed at the same time as the construction of Maeshowe, or was it front there? Mystery…
The discovery of a hole behind Maeshowe which would have been the site of another raised stone seems to indicate that Barnhouse had a function in the use of the cairn. What would connect stone the circle of Brodgar (of share the first alignment) and the cairn of Maeshowe, and would prove that the site forms a complete unit.
Flett suggests also a relation between Barnhouse, Watchstone and the circle of Brodgar. These two stones form a straight line with the center of Brodgar, according to a direction Northern/Western, Southern/Western.