That combination, a constructed crossing significant enough to be formally noted, yet almost entirely undescribed, gives the site an air of quiet obscurity that is itself worth remarking upon.

Causeways of this kind in Irish lakes and wetlands often have considerable age behind them. Some are medieval or early modern, built to connect islands to the shore or to allow passage across shallow stretches of water that would otherwise require a boat. Others are far older, associated with the management of crannogs, which are artificial or artificially modified islands used as defended dwelling places from the Bronze Age through to the early medieval period. Whether the Lough Conn causeway served any such purpose, and when it was built or last used, remains unclear from what is presently available.

Lough Conn itself is a substantial body of water, well known in Mayo for its brown trout fishing, and its shoreline is long and varied enough that a causeway could sit in relative obscurity even to those who know the lake well. Without more detailed records to draw on, the site remains one of those entries in the archaeological landscape that registers a human presence without yet being able to explain it.