I used to know Carrigleitrim as Ballynatona in years gone by, but I rather like the name now favoured by MountainViews. Given the many granite boulders that lie strewn around this hill, the possible “grey ridge” etymology would be neatly descriptive.

I suggest starting from the little car park at O 043 108 C, above Lacken. Head north over Sorrel Hill and drop down to the shoulder between it and Carrigleitrim at O 044 129 D. Some years ago, there was a muddy track through this forest intersection that led straight to the summit, but you now have to circumnavigate a Maginot Line of straggly pines, water-filled trenches and barbed wire. Getting around that and crossing the fence to your left, you are finally standing on an open hillside, mercifully free of forestation. There is an excellent view back towards the long-drawn-out hump of Lugnagun and the little dome of Woodend Hill, with the snaking Pollaphuca coiled around its feet. At the top of the slight incline, the way is blocked by a wall of forest, but if you cross back over the fence to the right you have a splendid view of the Liffey Valley to the east, from the Sand Pits to Coronation Plantation, with a few silvery meanders of the Liffey thrown in for good measure. The summit – a rather pretentious word here – is marked by a post at O 0478 1398 B. Surprisingly, there seems to be no vestige of our megalithic past on this hill, even though it is overshadowed by nearby Sorrel and Seefin.

If your retrace your steps to the shoulder, it is possible to give a bit of circularity to your walk by taking the track that leads into the forest to your right. Branch off at the first broad forest ride you meet on your left and you emerge onto the NW slope of Sorrel, from where you can easily contour over to Lugnagun and complete the circuit back to your starting point. Linkback: https://mountainviews.ie/summit/791/comment/4511/