Today, visitors to this Castletown site will find little more than an 11-metre-long depression and scattered rubble where the castle once stood. The lack of surviving architectural features makes it difficult to imagine the structure that once commanded this elevated position, though the choice of location on the esker ridge would have provided both defensive advantages and views across the surrounding landscape.

The castle’s placement near the documented field system suggests it was part of a larger medieval settlement pattern in north Galway. Eskers, those distinctive gravel ridges left behind by glacial meltwater, were often chosen as building sites in medieval Ireland; their naturally elevated and well-drained positions made them ideal for fortifications. While the precise date of Tolendal Castle’s construction remains unknown, its proximity to the field system hints at a once-thriving agricultural community that would have surrounded and supported the castle.

The site was first documented by O’Flanagan in 1927, and later included in the Archaeological Inventory of County Galway compiled by Olive Alcock, Kathy de hÓra and Paul Gosling in 1999. Though the physical remains are modest, the location continues to hold archaeological significance as part of the wider medieval landscape of north Galway, where castles, tower houses and field systems mark centuries of human occupation and adaptation to the Irish countryside.