Several important Mesolithic (c. 8000–4000 BC) sites have been discovered across Ireland, showing where Ireland’s earliest hunter-gatherers lived.
Ulster has some of the richest Mesolithic archaeology in Ireland, especially around the River Bann system (Newferry, Toome, Mount Sandel area) Coastal zones and lakeshores (Donegal Bay, Lough Erne)
In most cases, Mesolithic sites in Ulster leave little or nothing visible above ground today. Because Mesolithic people were mobile hunter-gatherers living in light temporary huts, the traces they left behind—charcoal, post-holes, flints, hearths—are archaeological features discovered below the surface, not monuments you can see like at Newgrange.
Why nothing survives on-site
Mesolithic structures were made of wood, reeds, and animal skins. They were short-lived seasonal camps. Only sub-surface traces remain (post holes, hearths, flint scatters). Excavations usually backfill the trenches to preserve them.
ULSTER
Mount Sandel, Co. Derry
The oldest confirmed settlement in Ireland (c. 8000 BC).
Remains of circular huts, flints, fish bones, and other food waste.
There is an interpretive panel and a public walkway near the site.
The hut circles themselves are no longer visible — they were excavated and re-covered.
A diagram what a mesolithic hut like Mount Sandel would have looked like.
Newferry, Co. Antrim
A very significant site on the River Bann.
Produced a long sequence of Mesolithic activity.
Important for its stone tools and riverine environment evidence.
The archaeological remains lay beneath farmland and riverbank deposits.
No visitor signage.
Lough Boora (Bann Valley sites), Co. Derry/Antrim
A cluster of Mesolithic activity sites along the Bann Valley.
(Sometimes grouped under “Bann Tradition.”)
Found large quantities of Bann flakes, microliths, and camping areas.
Toome Bay / Toome Bridge, Co. Antrim
Another key Bann River system site.
Evidence of large quantities of flint-working debris.
Seasonal fishing or foraging stop.
No above-ground remains.
The Mesolithic finds came from excavations and chance discoveries near the river.
These were archaeological digs with no standing features with no visible signs.
Cranagh, Co. Derry
A later Mesolithic site.
High-quality flint tools discovered in stratified layers.
Derragh Island, Lough Erne, Co. Fermanagh
A lakeside/riverine camp with microlithic tools.
Associated with fishing and seasonal movement.
Mesolithic tools were found during surveys with no visitble signs today.
Donegal Bay Coastal Sites, Co. Donegal
These are more dispersed small sites, including:
Mullaghmore Peninsula
Killala and Lough Foyle coastal areas
Evidence includes small camps, shell middens, and flint scatter fields.
Flint scatters and small camping sites leave no visible ruins.
Ballymaglaff, Co. Down
Lesser-known site with confirmed Mesolithic flint technology.
Flint scatters and small camping sites leave no visible ruins.
Whitepark Bay (possible Mesolithic activity), Co. Antrim
Mostly later archaeological activity, but flint concentrations indicate Mesolithic presence in parts of the coastal dunes.
Places to visit to find out more
Navan Centre & Fort (Armagh)
Not Mesolithic itself, but has reconstructed prehistoric buildings (Neolithic and later) that help visualise early life.
Ulster Museum, Belfast
Displays actual Mesolithic artefacts from many of the sites mentioned: Bann flakes, microliths, fish bones, and reconstructed models.
LEINSTER
Ferriter’s Cove, Co. Kerry
One of the most important late Mesolithic sites in Ireland.
Evidence of hunting, shellfish gathering, and early contact with Britain.
Human remains, stone tools, and animal bones found.
Lough Boora Parklands, Co. Offaly
Extensive Mesolithic activity.
Discoveries include hut floors, hearths, and flint tools.
Today it is a public park with interpretation, one of the few places where the landscape is accessible and marked.
Clowanstown, Co. Meath
Mesolithic lakeshore settlement revealed during motorway works.
Large assemblages of microliths and blades.
Dalkey Island, Co. Dublin
Coastal Mesolithic site with shell middens and flint tools.
Evidence of early marine exploitation.
MUNSTER
Hermitage, Castleconnell, Co. Limerick
One of the most important Mesolithic burials in Ireland.
A cremated burial dated c. 7000 BC.
Finely made polished adze found with the burial.
Ross Island (Copper Mines), Co. Kerry
Primarily Bronze Age, but early Mesolithic activity is also recorded.
Flint scatters and seasonal use of the lake area.
Trá Mhór / Tramore Bay, Co. Waterford
Shell middens and pebble tools indicate repeated coastal visits.
CONNACHT
Mayo North Coast (Belderrig, Broadhaven Bay area)
Early excavations uncovered hearths and stone tools.
Peat growth preserved landscapes used by Mesolithic hunter-gatherers.
Killala Bay & River Moy, Co. Mayo
Flint scatters and seasonal fishing activity sites.
0. Inver, Co. Mayo
Important for its microlithic toolkit and preservation conditions.
Sligo Bay Coastal Sites
Scatters of flints and middens discovered along the coast.
Often associated with changing sea levels during the Mesolithic.