Not only is Grimes' Graves an essentially East Anglian site, but it is also one of the most interesting, and most perplexing, prehistoric sites of Britain, presenting many controversial problems which only persistent research and careful observation will solve.

Recent work upon the site has marked a distinct advance in this direction, notably by the fortunate discovery in 1920 of Floor 85 with its definite stratification, and evidences of successive occupation during at least five widely separated intervals of time. With Dr. R. V. Favell as a co-worker, excavations were resumed upon this floor in August, 1921, and continued for six days. An additional 40 square yards was carefully and systematically explored down to the level of the boulder clay, resulting in the recovery of a further series of important flint implements and examples of engraving. Owing to the favourable nature of the site with its stratified chipping and occupation levels, each sealed and separated by sterile layers of humus, and closely compacted chalk debris, it has thrown important light upon some of the problems of the Grimes' Graves industry, and should enable not only certain definite conclusions to be arrived at, but materially assist in the ultimate classification of the various cultural forms of the implements from the Graves generally.