Crocknasharragh is a fairly isolated top, which is almost a 5km walk in due to the zigzagging nature of the terrain, and although a Carn, it requires about 400m ascent. There is parking for 2/3 cars at the northern tip of Lough Barra.There is also a larger parking/picnic area about 300m SW along the R254. I ascended directly up the steepish slope over rough grass and muddy spots, although quite manageable. The slope eases for a while at about 200m ascent, where I turned west for about 500m before another steepish section. The views on the ascent over Lough Barra were tremendous on the glorious day I had.As I gained height the grassy surface was gradually replaced with a mixture of rocks, grass, some heather and some boggy patches. I continued in a general NW direction for about 1.5km, before turning more directly west, dropping a little to a broad col.It was only around this point, 1.5 hours into the walk, that I first caught sight of Crocknasharragh, a prominent rounded hill rising from boulder/rock-strewn surroundings. I had to negotiate an unpleasant but small area of peat hags in the col. The last 1km was a fairly gentle climb up the eastern slope.The summit is an interesting area, with some unusual boulders, a few of which look like they’ve been stood upright by human hands, but are probably the result of natural forces. The high point is marked by a large cairn and a trig pillar. My return route was a bit to the south and avoided most of the peat hags.