Wetwang Slack is a dry valley in the Yorkshire Wolds that from 1963 to 1990 was the scene of a large-scale gravel quarry, which progressed along more than a mile of the valley floor. The quarry workings revealed extensive prehistoric and Romano-British remains and these were the subject of long-term excavations under the direction of the late Tony Brewster and I continued his work after his retirement form the field in 1975 until quarrying had more or less ceased in 1989. As work progressed the importance of the remains gradually became clear and the site is now recognised to be of international archaeological significance.