No trace of it is visible at the surface today, and whether it still survives intact below ground is unknown. That combination, a passage recorded but not seen, linking two separate enclosures across a stretch of north Cork farmland, gives the site an air of something half-remembered and half-lost.

Souterrains are stone-lined underground chambers and passages built during the early medieval period in Ireland, typically associated with ringforts, the circular enclosed settlements that once dotted the Irish countryside in their thousands. They were used for storage, refuge, or both. What makes the Euglaune example notable is the claim of its unusual length and purpose. The detail comes from a 1937 record by Broker, who noted the underground passage and its reputed connection to the neighbouring fort to the south. Inter-fort souterrains are not unheard of in Irish archaeology, but they are rare enough that this one, if it exists as described, would be a significant structure. The two ringforts sit approximately 170 metres apart, which would make any connecting passage considerably longer than most known examples.

Because nothing is visible above ground, there is little a visitor could observe on site without specialist survey or excavation. The interest here is less in what can be seen and more in what the landscape might still be concealing.