Stanydale Temple is a Neolithic site near Gruting, in Shetland’s west mainland. The building is the largest known building from that age in Shetland.
There’s an interesting article on the Archaeology Shetland website about the site, including a theory about an alignment with the position of the sun at the equinoxial sunsets (in March and September).
The photo also features in a recently released book by Allen Fraser, A Town Called Toilets: The Confessions of a Shetland Tour Guide, available from the Shetland Times Bookshop. I’ve bought a copy this weekend and am looking forward to reading it.