In pursuance of its policy of making small exploratory excavations in as many as possible of the prehistoric sites near Brighton, the Brighton and Hove Archaeological Club examined the earthworks on Thundersbarrow Hill during the spring of 1932. This was very largely made possible by generous contributions from numerous individuals as well as from the Sussex Archaeological Society, in addition to which valuable assistance was rendered by Mr. G. P. Burstow, Mr. B. C. Hamilton, Mr. G. Holleyman, Mr. J. D. M. Stuart, and Miss T. Hawkins, in digging, surveying, and washing pottery. Thanks are also due to the land-owner, Mr. F. S. C. Bridger of Hove, and to the tenant, Captain Torr of Little Buckingham, Shoreham, for permission to carry out the work.