Beinn Tarsuinn stands on the northern shores of Lochan Fada and is normally climbed alongside its larger neighbour Mullach Coire Mhic Fhearchair to its NE. These are a remote set of Munros. The summit sits on the eastern rim of a corrie biting deep into it's northern face. The western rim of this corrie gives rise to Beinn Tarsuinn’s extremely sharp north ridge which is a superb walk with minor scrambling. The ridge has crags on its eastern side and terminates bluntly overlooking Pollan na Muice. The end of the ridge makes an excellent viewpoint to view the other Letterewe Munros and north to the Fisherfield Forrest. The Munros SE ridge runs to a wide col named Bealach Odhair before joining the SW ridge of Mullach Coire Mhic Fhearchair. Sgurr Ban can also be included in your route if you have not run out of energy. This Munro is connected to Mullach Coire Mhic Fhearchair’s north ridge.
No matter how you look at it these are remote Munros and will demand a long walk in from any direction. Kinlochewe to the south is a popular start point with the option to cycle a lot of the land rover tracks that lead north toward Beinn Tarsuinn cutting down your walk in. Being so remote makes these hills a bit of an expedition which is no bad thing and a wander in these wild glens is something everyone should do once in their life.