Puck's Glen is a river-formed ravine on the Cowal Peninsula, in Argyll and Bute, west of Scotland, with a popular scenic walking trail beside the Eas Mòr stream (Gaelic for "big waterfall").

[9] In 1918, the Anchor Line Staff Magazine noted that Benmore House was celebrated for "Puck's Glen with its amber stream cutting a channel through moss-draped schistose rock, and tumbling from one silver rock-chalice to another.

Starting near the sixth milestone from Dunoon on the old main road to Arrochar, the bridle-path "by the stream which the Ordnance Survey map calls the Eas Mor, but which is better known as Puck's Burn" was soon hemmed in by steep banks, "while growing on their slopes are conifers of a dozen or more varieties, rhododendrons, and many of the rarer species of ferns.

[12] The dedication ceremony in September 1928 enjoyed fine weather; The Gardeners' Chronicle described its site as commanding "beautiful views above a gorge where 'the singing waters fall to the Eachaig River from lofty heights' " amidst towering woods, with Beinn Mhòr visible through a faint blue haze.

[13] In 1929 the Royal Botanic Garden Edinburgh opened the Younger Botanic Garden in the Benmore estate as its first outstation, and in the 1930s the Forestry Commission established Kilmun Arboretum to the south of Puck's Glen, planting large groups of tree species rather than individual specimens The Forestry Commission's Scottish National Forest Park Guide, issued in 1947, calls Puck's Glen "a rocky cleft beside a rushing stream, leading up to a fine viewpoint, which may be visited without charge or formality", and describes access by Clyde steamer and bus services.

[12] In 1948, the Scottish Mountaineering Club Journal noted regular visits to Puck's Glen, "attractive at all seasons but at its best in the Rhododendron month of June", and praised the view "from the Rest Hut, exquisitely designed by Robert Lorimer".

[5] The wood forms part of Benmore forest, which features waymarked trails leading visitors among trees including giant Californian redwoods, Douglas fir and Western hemlock.