You can start your walk to the summit at a forest trail which begins at H994171 A (the narrow road on the west side of Croslieve). There is room for two or three cars here. Follow the trail for approximately 100 meters until you have the option of either going left or right: GO RIGHT! You will come to a small pilgrimage area, with a cross, which you will see on your right. The trail becomes less obvious after this as you will start walking to your left up through the forest towards the gap between Slievebrack and Croslieve . If done correctly you will come to a style which will bring you out of the forest and into the gap. From here just make your own way up to the top. This route seems to be the most common way up to the summit and really is simple enough to follow; I would recommend it! If you're feeling really energetic you could also walk to the summit of Slievebrack , but the terrain is very deep and difficult to walk across; maybe not a good idea! Linkback: https://mountainviews.ie/summit/950/comment/20038/