There is another impression of this image in the collection of the National Galleries of Scotland, accession number: NGL 182.15.
Wikipedia states: Lochinvar (or Lan Var) is a loch in the civil parish of Dalry in the historic county of Kirkcudbrightshire, Dumfries and Galloway Scotland. It is located in the Galloway Hills, around 3.5 miles (5.6 km) north-east of St. John's Town of Dalry. The loch formerly had an island on which stood Lochinvar Castle, seat of the Gordon family. In the 20th century the loch was dammed to form a reservoir, raising the water level and submerging the island with the ruins of the castle. The loch is used for trout fishing.
The name Lochinvar is from Scots Gaelic 'Loch a' bharra' (older Gaelic Loch an bharra, the genitive of barr = summit) meaning "Loch on the hilltop". Consequently it is stressed on the last syllable (unlike Lochinver). Angus depicts the mountains of Canisp and Suilven.