The situation of the Neolithic Causewayed camp at Abingdon, discovered by the Rev. Charles Overy and made famous by the late Mr. E. T. Leeds, is well known and only requires summarizing. It lies on a spur bounded by the valleys of two brooks at the south edge of an expanse of Summertown-Radley terrace gravel, three-quarters of a mile north of the Thames. The two concentric ditches, to which reference is made below, lay between the brooks; a third similar ditch, of which pit A was possibly a section, may have lain to the south. The site was at its highest (about 202 ft. O.D.) at about the centre of arc of the outer ditch, whence there was a gentle southerly slope. The expanses of Summertown-Radley gravel in the Oxford region have been found rich in prehistoric finds, that between Radley and Abingdon being no exception.