Fionn Bheinn is an isolated Munro sitting just north of Achnasheen. From the south the Munro appears rather featureless with its slopes appearing gentle and grassy. The northern side is more impressive, a deep corrie Toll Mor bites deep into the hill side producing steep craggy slopes at the corrie headwall. Most people approach from the south and miss this fine feature. Due to this corrie Fionn Bheinn has a series of summit ridges. The north ridge runs down the west rim of the corrie to Strath Chrombuill below. The eastern ridge splits on the eastern corrie Toll Beag with the northern split dropping to Loch Fannich and the southern branch drops to Druim Dubh. The route from Achnasheen in the south ascends via this ridge.
As Munros in this region go Fionn Bheinn is possibly not the most interesting but it is easily accessible if time is short.