A rock or earth‐cut socket which at one time held an upright timber post. Commonly found on excavations, such holes usually comprise several distinct elements. The post pit is the original hole dug to receive the post; once the post is inserted and positioned it is usually fixed in place by the insertion of post packing round about. Stones are often used to make a strong setting. Because timber posts rarely survive archaeologically, the centre of a posthole is usually a negative impression of the post that once stood there, and this is known as the post pipe.