In 2000, during topsoil stripping ahead of the construction of the Ballincollig-Ballineen gas pipeline, workers uncovered a surface scatter of heat-shattered stones and charcoal-darkened soil. Before archaeologists could investigate, heavy machinery had already obliterated it. What remained was a puzzle: the scatter itself may have been dragged northward by years of ploughing, with the true, undisturbed concentration of burnt material likely still sitting quietly to the south of the pipeline's path.

The site belongs to a category of prehistoric monument known as a burnt mound, one of the most commonly found archaeological features in Ireland yet also one of the least understood. These are essentially mounds of fire-cracked stone and charcoal-rich earth, thought to represent places where water was repeatedly heated by dropping in fire-heated stones, possibly for cooking, bathing, or industrial processes. They are generally dated to the Bronze Age, though their precise function continues to be debated. What makes the Castlelands find particularly interesting is not only the circumstances of its accidental destruction but its proximity to a second possible burnt mound approximately 50 metres to the east. That neighbouring site was formally excavated, and is recorded separately, suggesting this corner of Cork may have seen repeated or sustained activity of a similar kind across the landscape.