Much of Scotland is mountainous; western areas of the Highlands enjoy a wet climate.
The more steeply plunging west coast highland rivers in particular are home to countless waterfalls.
Confusingly 'linn' can denote either a fall or the plunge pool or indeed a confined stretch of water.
‘Spout’ is another common word found throughout England and Scotland for particular types of fall though it is usually replaced by ‘sput’ in the formerly Gaelic-speaking parts of the latter.
Ordnance Survey 1:25,000 scale Explorer map series, sheets 309-470