The gateway is now partially blocked, its original width of 2.8 metres reduced by later stonework, and it sits absorbed into the townland boundary wall that divides Leamaneh North from Sheshymore. What makes it quietly arresting is the precision still visible in the masonry: both piers are rebated, meaning each has a stepped recess cut into the stone face, the kind of careful finishing associated with a gate that was meant to close properly and hold firm.

The detail preserved in the two piers rewards close looking. The eastern pier carries two shallow rectangular holes in its rebate, one noticeably smaller than the other, and some stone has since been removed from its southern face. The western pier is the taller of the two, reaching a maximum height of 1.24 metres, and its rebate retains a pair of projecting ledges. On top of this pier sits a separate flat stone with a mortice cut into it, a socket designed to receive a vertical timber post or the hanging mechanism of a gate. Together, the holes, ledges, and mortice are the functional vocabulary of a working agricultural or estate gateway, speaking to a time when this threshold was a regulated point of passage rather than a fold in a boundary wall. A comparable gateway survives approximately 415 metres to the south, more directly associated with Leamaneh Castle itself, and the two structures together suggest a planned approach corridor, a field system organised around the castle that still partly survives in the landscape. Leamaneh Castle, visible from the ridge some 455 metres to the south-south-east, is a tower house with a later semi-fortified house attached, associated with the O'Brien family and most famously with Máire Rua O'Brien in the seventeenth century. This gateway belongs to the working agricultural world that surrounded and sustained that residence.