I climbed Croaghaun twice in September 2016, the first time on a showery overcast day when I couldn't see anything from the summit, and the following day which in typical Irish style was a clear, cloudless, warm day. Starting out from Lough Acorrymore the climb is moderately difficult but not overly so, and the views behind to the east as you climb broaden to reveal the whole Island below. The summit arrives quite unexpectedly, and if you're lucky enough to be there on a clear day the view is spectacular. Achill Head to the West, Slievemore to the Northeast and Erris Head to the North. I'm not a fan of heights and the drop to the sea from the cairn did unsettle me, the drop is made all the more impressive by the fact that the sea crashing against the cliffs below is barely audible. The descent is pleasant enough, the sense of having peaked a mountain which has fascinated me since childhood made it all the more enjoyable. All in all it takes about 3.5 hours, and it really is worth it. Linkback: https://mountainviews.ie/summit/127/comment/19542/