Castle-Mearnaig or Castle-Glensanda, a ruined fortalice on the Kingerloch coast of Lismore and Appin parish, Argyllshire, crowning a conical rock, adjacent to Glensanda Hill, opposite Castle-Coeffin. The rock on which it stands is about 150 feet high, and 44 feet by 20 broad at the top. The castle occupies its entire summit; is an oblong building, 45 feet long, 20 wide, and 33 high; and seems to be less ancient, as it is more entire, than Castle-Coeffin.

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