crannogとは 意味・読み方・使い方

A crannog ( /ˈkrænəɡ/; Irish: crannóg [ˈkɾˠan̪ˠoːɡ]; Scottish Gaelic: crannag) is typically a partially or entirely artificial island, usually built in lakes, rivers and estuarine waters. Crannogs were used as dwellings over five millennia from the European Neolithic to as late as the 17th/early 18th century although in Scotland, Bronze Age and Norse Period use is not apparent in the archaeological record. Crannogs have been variously interpreted as free-standing wooden structures, as at Loch Tay, although more commonly they exist as brush, stone or timber mounds which can be revetted with timber piles. However, in areas such as the Western Isles of Scotland, timber was unavailable from the Neolithic onwards. As a result, completely stone crannogs supporting drystone architecture are common here. Today, crannogs typically appear as small, circular islets, often 10 to 30 metres (30 to 100 ft) in diameter, covered in dense vegetation due to their inaccessibility to grazing livestock.