[5] The area covered by the NSA represents the section of the glen least affected by the hydro-electric scheme, and includes the Culligran Falls.

[12] Glen Strathfarrar contains several areas of Caledonian Forest,[13] the name given to the remnants of the old-growth temperate rainforest of Scotland composed chiefly of Scots pine trees that first colonised the area after the last Ice Age 8–10,000 years ago, and which forms an important habitat for species such as capercaillie, crested tit and the endemic Scottish crossbill.

[14] Since the late 18th century commercial timber extraction (especially during the two world wars) and human settlement have contributed to the serious deterioration of the woodland.

During the Penal laws, the Gaels of Glen Strathfarrar who belonged to the illegal Catholic Church in Scotland attended a covert "Mass house".

[20][21] Between 1735 and 1746, the laity were served from a mountain cave dwelling in Glen Cannich by three outlawed Roman Catholic priests of the Society of Jesus; Frs.

[22] A small island in Loch a' Mhuillidh holds the remains of a building used by Simon Fraser, 11th Lord Lovat on his flight from Culloden after the unsuccessful Jacobite rising of 1745.

Rising rents, religious persecution, and the introduction of both sheep farming and deer forests led to both large scale voluntary emigration and the evictions known as the Highland clearances.

[3] The road along the glen is private, and a locked gate system operates whereby permission for motor vehicle access must be requested at the gatehouse.