Having decided at some time to go to the Brough of Bigging at HY219157 ( S of Yesnaby , the Broch of Borwick being to the N – confusingly they share the alternative name of Yescanaby ! ) I did a websearch for the other Orcadian promontory fort . Finally had to fall back on CANMORE , which came up with five sites which have at one time or another been described as such . Off Mainland there is Br(a)e Brough a.k.a. Sui Fea at St.John’s Head on Hoy (HY185031) and the less certain Scuthi Head on Sanday (HY633041) . Then there are the Brough of Windwick (ND459872) , the Point of Onston and my new target ( comprising simply of two widely spaced walls they say ) .