In the summer of 1950 it proved possible to continue the British excavations at Mycenae which had been suspended in 1939 owing to the war. The Greek Government courteously granted the necessary permission and Dr. Papademetriou, Ephor of Antiquities for Argolis, and Mr. Petsas cooperated most cordially throughout. The work was carried out under the aegis of the British School at Athens which made a generous grant towards the funds and Mr. J. M. Cook, the Director, and Mr. Sinclair Hood, the Assistant-Director, who both took part in the excavations, afforded all possible assistance.The excavations were especially concerned with the following points: the further exploration, within and without the Cyclopean walls, of the Prehistoric Cemetery to which belonged the royal Shaft Graves found by Schliemann; an attempt to trace the line of the Middle Bronze Age wall of the earliest citadel which preceded the Cyclopean fortress; the re-examination of Tsountas' House, an important building within the walls first excavated in 1886; the clearing of the Epano Phournos tholos tomb; the further exploration of the Cyclopean Terrace Building discovered in 1923; and the investigation of a newly discovered building, now known as the House of Stirrup Jars, near the so-called Tomb of Clytemnestra. The architect of the expedition, Mr. Charles Hobbis, R.I.B.A., also assisted the Greek authorities at their request in the conservation and repairs in progress at the Tomb of Clytemnestra and the Lion Gate.