Bush Island

On the highest point of Bush Island in County Mayo, a low dry-stone wall traces a rough oval through the undergrowth. Roughly seventeen metres long and fourteen wide, the structure occupies a commanding position above the water, suggesting a deliberate enclosure rather than a random boundary. It may have guarded a small monastic precinct, held livestock, or simply exploited the natural defence of the surrounding lake. The wall still stands, quietly waiting for someone to remember what it kept inside.