Bouleuterion Plateia; Clearing Earlier Foundation Trench at Its Southwest Corner; Lowest Hard Packed Fill of Bedrock. Bouleuterion Plateia; Southeast Corner; From Lower Part of First Layer Just above Breccia ... Β-10 1957, 1958 Lot Β 252 Lot Β 253 Lot Β 254 Lot Β 255 Lot Β 256 Lot Β 257 Lot Β 258 Lot Β 259 Lot Β 260 ... 2nd half of 5th B.C.