The court cairn or tomb is a megalithic type of chamber tomb and gallery grave, specifically a variant of the chambered cairn, found in western and northern Ireland, and in mostly southwest Scotland (where it maybe also be called a horned cairn or Clyde-Carlingford tomb), around 4000–3500 BCE, but many remained in use until as late as the Bronze Age transition, c. 2200 BCE. They are generally considered to be the earliest chambered cairn tombs in Scotland, and their construction technique was probably brought from Scotland to Ireland.In Scotland, they are most common in what today are Argyll and Dumfries and Galloway (where they form the Clyde-Carlingford group), though a small outlying group have been found near Perth.