Today, only a scatter of stones marks where this fortification once stood, surrounded by flat, low-lying ground on its other three sides. The strategic positioning above the river would have given its medieval occupants clear views across the surrounding countryside, whilst the natural rock formation provided a solid defensive foundation.

Just southeast of the castle site, visitors can still make out a curious circular earthwork, roughly 38 metres in diameter. This feature consists of a low earthen bank, standing about a quarter of a metre high, with a shallow external ditch approximately 2 metres wide; likely part of the castle’s original defensive arrangements. According to the owner of nearby Rockfield House, speaking in the early 1900s, many of the old arches and large stones found in their farmyard were salvaged from the castle ruins, suggesting the structure was substantially dismantled for building materials over the centuries.

Evidence of the castle’s former importance can be found in the traces of a raised causeway that once approached the site from the west. Historical accounts from Grove White’s early 20th century writings mention that this causeway originally featured ‘a very ancient arched bridge’, though by the 1930s, local historian Bowman noted it had already been replaced with a wooden bridge some fifty years earlier. These remnants of medieval infrastructure hint at Ballyheen Castle’s role as a significant local stronghold, controlling both river crossing and the surrounding lands.