What makes this possible to see at all is not archaeology but drainage engineering: when the Inny River was drained in the 1960s, the water level of Lough Derravaragh dropped, and an ancient shoreline that had been submerged for millennia quietly re-emerged.

The site sits roughly fifty metres north-west of the point where the Inny enters the lake. On low natural spits of higher ground within the exposed lake bed, a number of chert flakes were recovered. Chert is a fine-grained sedimentary rock that, like flint, fractures predictably and was used by Mesolithic people to make cutting and scraping tools; the flakes found here are the by-product of that knapping process, the small waste pieces struck off as a tool was shaped. The finds are described as poor in quality and few in number, and searches further inland along the old shoreline produced no additional scatters of flint or other worked stone. That absence is almost as interesting as the presence: this appears to be a modest, perhaps incidental, trace of activity rather than the remnant of a sustained occupation or working site. The lake, in its earlier, higher form, would have been a very different landscape, and whoever left these flakes behind was moving through a world that has been under water for most of recorded history.