The Burn of the White Horse

I tend to do the same walks over and over and headed over to Lyness intending to get the community bus to Longhope and walk around Cantick Head and along the cliffs. I'd forgotten that the bus doesn't run on Saturdays, so that was out. So I explored near Lyness instead- into some derelict wartime buildings and then up onto the moors. I headed for the Burn of the White Horse, just because of the name. It and several other burns combine to make Mill Burn- Burn of Moifea, Burn of Tonguevale, Burn of Westdale, Burn of Withigill. I didn't see a white horse at the burn- I wonder how the name came about. Loads of nesting common terns and tysties at Lyness, several bonxie territories on the moor and a golden plover came up- probably from a nest.