Crannogs

Name derives from Irish word ‘crann’ meaning a tree (referring to the wooden elements of a ‘crannog’).
The terms ‘inis’ and ‘oilean’ are also found in texts (usually pre-9th century). Both mean island and often refer to crannogs.
Ballydoolough
Lough Boora
A lake settlement site at Lough Boora from the earlier Mesolithic (8000-6500 BC) also has been identified as similar in nature to a crannog.
Earliest
Some crannog or artifical islands or platforms are known from the Mesolithic.
These include sites like Lough Gara where platforms of stone as shown here produced Mesolithic finds.
Lough Gara
Rathjordan
Some crannogs or lake settlements also appear to have been built in the Neolithic such as at Rathjordan shown here.
Moynagh Lough
At other sites, activity near artificial islands is quite different.
At Moynagh Lough – a well known lake settlement – there was a major find of a hoard of flint objects.
Cullyhanna
Lake settlements like these are more widely known from the Bronze Age.
Such as Cullyhanna shown here.
Cullyhanna, Co. Armagh
Ballinderry
Clonfinlough
Moynagh Lough, Co. Meath
Lisnacrogher
Craigywarren, Co. Antrim

Main publication: The Archaeology of Lake Settlement by Aidan O'Sullivan