This is a cashel, the stone equivalent of the more familiar earthen ringfort, a type of enclosed farmstead built across Ireland during the early medieval period, typically between the seventh and tenth centuries. What makes this one quietly interesting is not any single dramatic feature, but the layering of time visible in the structure itself: the original stone-and-earth bank has been incorporated into a modern field wall, which now runs along the same line, making the ancient enclosure a functional boundary in the present-day agricultural landscape.

The site sits approximately 120 metres south of a second cashel, which survives nearby. Two cashels in such close proximity raises questions that the ground alone cannot easily answer, about whether they were contemporary, related by family or function, or simply reusing a landscape already understood as significant. The Rusheeny cashel is recorded as being in fair condition, with one gap on the south-south-east side that also appears to be a modern alteration rather than an original entrance. Paul Gosling's Archaeological Inventory of County Galway, published in 1993, remains the principal documentary source for the site, placing it within a broader survey of early medieval enclosures across west Galway.