Water basin of the Water Clock against stepped retaining wall. During excavations ... east ... 1953
Water basin of the Water Clock in front of the stepped retaining wall ... south ... 1953
Stepped retaining wall of the "Heliaia" (now identified as the Aiakeion). In right foreground the Water Clock ... southeast ... 1953
Klepsydra drain where it tunnels through bedrock under the Middle Stoa ... north 2752 Horizontal (normal) ... 4 Jul 1968
Klepsydra drain just south of the south wall of the Middle Stoa ... south 2750 Horizontal (normal) ... 4 Jul 1968
Klepsydra drain as it passes through the south aisle of the Middle Stoa ... south 2768 Horizontal (normal) ... 12 Jul 1968
Middle Stoa north aisle. On left, stretch of the pressure pipe/Channel 14 and on the right, Tile Drain 4, related to the Klepsydra Water Clock. End of 1996 season ... Grid: I/8-13 south 3325 Horizontal (normal) ... August 1996