The cashel, a type of ringfort built from dry-laid stone rather than earthen banks, once measured roughly 54 metres across, which would have made it a substantial structure in its day. Now its enclosing wall has largely collapsed, and where quarrying has eaten into the eastern and southern sides, the original circuit is difficult to trace at all. Overgrowth covers much of what remains.

What lifts the site above a simple note of decay is the souterrain recorded within its eastern interior. A souterrain is an underground passage or chamber, typically stone-lined, built during the early medieval period and associated with ringfort settlements; they served variously as storage spaces, places of refuge, or concealed escape routes. The cashel itself belongs to a broader class of stone-built enclosures common across the west of Ireland, where field walls were the natural medium of construction. McCaffrey noted the site in 1952, and the quarrying damage visible today suggests the monument has been under pressure for at least that long, probably longer. The combination of a collapsed perimeter, active encroachment, and subsurface archaeology makes An Laigheachán a quietly complicated place, easier to overlook than to read.