Excavations on behalf of the Research Committee for the Archæological Excavation of Derbyshire Caves (British Association and Royal Anthropological Institute) were commenced by the writer in the Pin Hole Cave, Creswell Crags, in September, 1924, at a point 23 feet from the entrance, where the superficial examination of the upper beds by the Rev. Magins Mello had terminated in 1873. The work has steadily progressed, and has now reached 80 feet beyond the datum point, and is proceeding in the large inner chamber which has been revealed by the removal of the deposits which, over half its area, had accumulated to the level of the roof. The section embraces an upper cave-earth from 6 to 7 feet in thickness, mostly sealed beneath stalagmite, or breccia, and containing artifacts ranging in time from Upper Mousterian at its base to Magdalenian at the top. The lower cave-earth, 10 to 11 feet in thickness, contains three lower Palæolithic cultural zones, the lowest of which is 13 feet beneath the floor of the cave.