Crannogs are a type of ancient Irish settlement that have received considerable attention from archaeologists in recent years. These structures are small, man-made islands typically found in shallow lakes and marshes. Crannogs were used as domestic dwellings and were an important part of the archaeology of Ireland during the Bronze Age, Iron Age, and Early Medieval periods.

Crannogs are often circular or oval in shape, and typically range from 10 to 30 metres in diameter. They were constructed from a variety of materials, including timber, brush, and stone, and often featured walls made from woven hurdles and posts, or sometimes stone and turf. The interiors of crannogs were often partitioned into several rooms, and could accommodate one or more families.

Archaeological excavations have revealed that crannogs were used for a variety of purposes, including as domestic dwellings, workshops, and storage facilities. In some cases, they were also used for defensive purposes, as they provided a secure location that was easily defensible against attack.

One of the most well-known examples of a crannog in Ireland is the site of Lough Gur, located in County Limerick. Excavations at this site have revealed evidence of multiple phases of occupation, dating from the Bronze Age to the Early Medieval period. Another important crannog site is the Island of Inchcleraun, located in Lough Ree, County Longford. This site has been extensively investigated and provides important insights into the construction and use of crannogs in Ireland.

Interactive Map of Crannogs in the Republic of Ireland