It trends east-northeast, west-southwest and is narrowly triangular in shape.

At the southwest end of the loch is the islet Innis Luana on which stands the ruins of an ancient castle named Caisteal na Nighinn Ruaidhe (Castle of the Red Haired Maiden).

[5] Near the north shore on the islet of Eilean Fraoch is the remains of a crannog.

[6] The loch was surveyed[3] on 26 and 27 May 1903 by Sir John Murray, T.N.

Marshall and E.M. Wedderburn and later charted [7] as part of Murray's Bathymetrical Survey of Fresh-Water Lochs of Scotland 1897-1909.