Most holy wells in Ireland are relatively exposed, marked by a tree hung with rags or a simple stone surround, but Toberclehaun is different: its circular well is encased in a drystone wall rising over two metres on the interior, with six descending steps at the northwest and a narrow entrance just wide enough to pass through. Stepping down into it, a visitor moves below the level of the surrounding ground.

The structure measures roughly 3.2 to 3.4 metres in external diameter, with walls about 0.8 metres thick, giving the interior a close, deliberate feel. What makes it particularly striking is the series of triangular alcoves cut into the internal walls, each one holding offerings left by those who have visited to pray or seek the well's intercession. This practice of leaving votive offerings at holy wells, small coins, cloth, religious medals, or carved stones, is among the older continuous ritual traditions in Ireland, blending pre-Christian and Catholic custom. The well sits on a gentle south-east facing slope within a burial ground, a pairing that is not unusual in the Irish landscape, where sacred water and the dead have long been kept in close proximity. The well has been conserved, suggesting that its significance has been recognised and that the structure visitors see today reflects deliberate care rather than simple survival.