11,000 years under the silt
The elk in the lake
In 1947, during works or dredging activity on Lough Sillan, a near-complete skeleton of the Giant Irish Elk — Megaloceros giganteus — was recovered from the lake bed. The antler span measured over 3.6 metres, which put it among the largest and best-preserved specimens ever found in Ireland. The Giant Irish Elk was not actually an elk and was not exclusively Irish — it ranged across Eurasia during the Pleistocene and survived in Ireland until roughly 9,000 years ago, well after the last Ice Age ended. Sillan preserved it. The specimen was removed to museum collections and Shercock went back to fishing.
A fishing tradition that still runs
Lough Sillan and the pike
Lough Sillan sits on the border between Shercock and the Cootehill hinterland and has been a coarse-fishing lake for as long as there are records. Pike are the draw — big ones, regularly running into the twenties of pounds, with thirties reported in the right seasons. Perch and bream run alongside them. The lake is set up for it: shallow margins, good weed, a reasonable access route. Anglers come from across the island and across the border. They fish dawn and dusk and argue about bait in the pub afterwards.
What the glacier left behind
Drumlin country
The landscape around Shercock is the product of the last Ice Age retreating north and dropping its load. Drumlins — small, smooth, teardrop-shaped hills — were deposited in swarms across east Cavan and south Ulster, and the hollows between them filled with water. Lough Sillan is one of those hollows. The same event that formed the lake also deposited the thick peat and silty sediment that preserved the Giant Irish Elk skeleton for eleven thousand years. The Ice Age shaped this corner of Cavan twice: once when it came and once when it went.