A remarkable example is located near Crancreagh Bridge in County Offaly, which marks the position of what must have been the north-western edge of ancient Lough Boora, on whose shores the first people of the Irish midlands camped in Mesolithic times 8,500 or so years ago. This ancient lake disappeared long ago, swamped by the growing expanse of bog, which buried not only the lake itself, but preserved the campsites of the early midlanders.
A notable illustration is located near Crancreagh Bridge in County Offaly, signifying the location of what was probably the northernmost edge of ancient Lough Boora, where early inhabitants of the Irish Midlands established their first settlements around 8,500 years ago. The lake has since disappeared, and peat bogs have preserved not only the lake but also the campsites of the initial settlers.