Irish academic Paul Tempan records that Leenaun hill has also been called "Bunnaviskaun". The peak has been called Leenaun Mountain. Tempan notes the subsidiary peak of Búcán, it takes the term "búc" from the dialect word "buc", which means "point" or "summit", and is found in Southern France in mountain names.
Geography
Leenaun Hill lies on its own massif in the northeastern sector of the Maumturk range, separated from the central spine of the range by a deep col at, which is known to hill-walkers of the Maumturks Challenge as the "Col of Despondency". The geology of this massif is derived from siltstone and sandstone, and contrasts sharply with the quartzite and grits of the central spine; while the summits on the massif of Leenaun Hill are grassy with peak hags, in contrast to the rocky ridges of the central spine. A long northwest to southeast grassy ridge runs through Leenaun Hill's massif, with Leenaun Hill lying close to the centre of the ridge. To the northwest are the subsidiary peaks of Meall Cheo, An Meall Dubh barr thiar thuaidh, whose prominence of qualifies it as an Arderin Beg. Further north lies Leenaun Hill Far North-West Top, Meall Dubh i bhfad siar ó thuaidh barr, whose prominence of also qualifies it as an Arderin Beg. The most northerly subsidiary peak, and the most northerly peak in the Maumturk range, is Búcán, meaning "spur", whose prominence of qualifies it as an Arderin. To the southwest of Leenaun Hill is a long grassy ridge with the minor subsidiary peak of Taobh Dubh, meaning "black hillside". Across the "Col of Despondency", lies another subsidiary peak of Maumturkmore, also known as Binn Bhán, whose geology is a complex mix of marbles, metavolcanics, schists, and grits. Immediately to the south of Maumturkmore is the steep "v-shaped" col of Maam Turk,, from which the entire range bears its name, and south of which lies the quartzite peaks of the central spine of the Maumturks range, starting with Letterbreckaun, the 2nd-highest peak in the range at.
Hill walking
While the grassy and boggy massif of Leenaun Hill is less appealing to climbers than the rocky peaks of the rest of the Maumturks range, Leenaun Hill and its subsidiary peaks offer well-regarded views of Killary Harbour, Ireland's deepest fjord, and the Mweelrea mountain range. The most straightforward route to the summit of Leenaun is the 6-kilometre 2–3 hour roundtrip route from the village of Leenaun and back; however, because of its positioning on a high massif, it can also be climbed as an 11-kilometre 4–5 hour loop-route from Leenaun village in the north, summiting to the ridge south of Leenaun Hill, and then turning northwest to summit Leenaun Hill and most of its northerly subsidiary summits before returning to the village. Leenaun Hill is climbed as part of the Maamturks Challenge, a 25-kilometre 10–12 hour walk over the full Maumturks range, which is considered one of the "great classic ridge-walks of Ireland", but of "extreme grade" due to the circa 7,600 feet of total ascent. Since 1975, the University College GalwayMountaineering Club, has run the annual "Maamturks Challenge Walk", and man a checkpoint at Meall Cheo; the summit of Leenaun Hill is optional being southeast of the MCW route as it crosses the "Col of Despondency" from Maumturkmore.
