To visit Dùn Gerashader take the A855 north out of Portree for just over a kilometre and park your vehicle immediately before the turn off to Torvaig. Do not scale the barbed wire fence. Walk up to the junction, turn right over the bridge and, 100 metres on, a gate to the right provides access to gentle grassy slopes that lead to the base of the rise bearing the fort. There is a small stream to cross (stepping stones) followed by a steepish rise to Gerashader.
I contoured left on the ascent and was amazed when I reached the southern defences of the fort: three rows of simply huge blocks, described by Canmore as 'the remains of 3 lines of obstructions', arranged like rows of dentures, each one about a metre wide and 1½ metres or more in height. The mind boggles to understand how, two millennia ago, men could locate such stones and move them uphill into place. Above these is the tumbled southern wall, some four metres broad.
Beyond this rocky rampart is the relatively level grassy interior, dotted with stones that have probably tumbled from the much higher wall on the north rim of the hill, and beyond that, on a rise, the wide northern wall of the fort. Though much tumbled, stretches of the original masonry courses are still evident.