The well at Eachros sits on a gently south-westward-facing slope, close to a field fence, where water flows down from higher ground to the north-east and collects in a shallow hollow on a stone ledge measuring roughly 0.9 metres by 0.4 metres. The depth of standing water reaches only about five centimetres, and what was once a natural seep is now directed by a pipe, yet the place retains the character of something that has been noticed and returned to across generations.

The well's significance was documented by Fr O'Donoghue in 1917, who recorded its association with the nearby Augeris church and graveyard, the ruins of which lie approximately 300 metres to the south-west. The practice connected to both sites was one of "rounds", a form of ritual circuit, often performed in a prescribed number of laps and sometimes accompanied by prayers, that was commonly observed at Irish holy wells and sacred sites. According to the information gathered by Fr O'Donoghue, worshippers would visit the church first and then make their rounds at the well afterwards, suggesting the two sites functioned together as part of a single act of devotion. That the well retained this role long after the church itself had fallen out of regular use says something about how local sacred geography persisted independently of formal ecclesiastical structures.