In low-lying rough pastureland near Leamcon in County Galway, roughly twenty metres south-west of a small stream, there is a holy well that has left no visible trace on the ground whatsoever. Nothing marks the spot. The land gives nothing away.

Holy wells in Ireland were typically sites of local veneration, associated with a particular saint and visited for healing or prayer, often on a saint's feast day. This one carries the name Tobermacduagh, which links it to Mac Duagh, a reference to Saint Colman Mac Duagh, a sixth and seventh-century hermit whose name is attached to a number of sites across the west of Ireland, most notably the monastic complex at Kilmacduagh near Gort. The well appears by name on the Ordnance Survey six-inch maps of both 1838 and 1929, meaning that at least within living memory of the earlier survey, the site was considered significant enough to record and name. By the time the twentieth century was well underway, the name persisted on paper even as the physical reality faded. Today, neither earthwork nor stonework nor any other surface feature remains to indicate where the well once was.