National audienceThe Colombier farm was located on the right bank of the Seine River, not far from its confluence with the Yonne River, in the middle of the swamp. It was created during the 16th century and disappeared during the 18th century. Discovered and studied by Inrap from 2004 to 2007, this modern rural establishment benefited from its excavation over a large surface (4 ha) and its good preservation conditions, especially of organic remains. The data recovered are the object of a multidisciplinary archaeological, paleoenvironmental, historical and archaeo-geographic study. By replacing the archaeological data in a historical and sociological framework, the authors reconstruct, beyond a “fortified house”, the totality and economy of ...