Poros stone aqueduct: connecting shaft and well. Round well and square shaft connected by underground channel with stone aqueduct ... south 5775 Horizontal (normal) ... 17 Jun 1955
Poros stone aqueduct: connecting shaft and well. Square shaft connected by underground channel with stone aqueduct ... northwest 5784 Horizontal (normal) ... 17 Jun 1955
Poros stone aqueduct: connecting shaft and well. Round well and square shaft connected by underground channel with stone aqueduct ... AMS south 5775 Horizontal (normal) ... 17 Jun 1955