Glensalach, a glen in Ardchattan parish, Argyllshire, extending 5½ miles north-north-westward from Loch Etive, near Ardchattan House, to Loch Creran, near Barcavdine. It takes down the vast 9 furlongs of the Esragan to the former sea-inlet, and 4½ miles of the Dearg Abhainn to the latter, the ' col ' between these streams having an altitude of 516 feet.—Ord. Sur.,, sh. 45, 1876.

(F.H. Groome, Ordnance Gazetteer of Scotland (1882-4); © 2004 Gazetteer for Scotland)