Linn (geology)

In Scotland and northern England, a Linn is a geographical water feature, a watercourse that has cut through a shelf of hard rock creating a narrow, steep-sided crevice through which it runs.
Typically one named after a river or area can have application even for more than one such feature.
The photograph of the Linn of Dee illustrates the attributes of a typical 'Linn'.
In Gordon the author describing a walk down Glen Avon in the Cairngorms mentions two Linns on the River Avon - first:
Second:
A linn may also refer to a waterfall or a pool at the foot of a waterfall, with the derivation a confusion of Scots Gaelic linne and Old English hlynn.