No earthwork rises from the grass, no stones break the surface, and nobody locally appears to have passed down any story or name for it. What is known comes from a single aerial photograph, in which a faint oval cropmark, roughly thirty metres across, betrays the outline of an enclosure beneath the pasture.

Cropmarks appear when buried features, such as the filled ditches of an ancient enclosure, affect the growth of crops or grass above them. Soil that was once disturbed tends to retain moisture differently from the undisturbed ground around it, and in dry conditions the variation in plant colour or height becomes readable from the air. That is the only way this particular site has made itself known. The enclosure at Bawnmore is oval in plan, a shape associated with a broad range of activity across Irish prehistory and the early medieval period, though without excavation or any surviving surface trace, nothing more specific can be said about its age or purpose. It sits quietly under grazing land, unacknowledged in local memory.