The univallate fortification, which means it has a single defensive rampart, creates an almost circular enclosure measuring roughly 101 metres north to south and 112 metres east to west. The entire site covers about one hectare and follows the natural contours of the hilltop, with its rubble rampart still showing traces of the original stone facing that would have presented a formidable barrier to any would;be attackers.

The fort’s builders clearly put thought into its entrance; a carefully constructed stone;lined gap on the west;southwest side spans just over three metres wide, narrow enough to be easily defended whilst still allowing access. The rampart remains particularly well;preserved along the eastern section, though time hasn’t been entirely kind to the northern portion, where resourceful farmers repurposed the ancient stones to create a field boundary that still follows the original defensive line. Today, dense scrub covers much of the interior, and a modern field boundary runs east to west through the centre of the site, marking the division between the townlands of Killoughterane and Knockscur.

First appearing on second edition Ordnance Survey maps, this hillfort represents a fascinating glimpse into Ireland’s Iron Age past, when communities sought defensible positions that offered both security and commanding views of the surrounding landscape. From its summit, the fort’s inhabitants would have enjoyed panoramic vistas whilst keeping watch over the various river systems flowing through the valleys below, making it an ideal strategic location for monitoring movement through this part of County Carlow.