Room IV. From northeast ... AMS Horizontal (normal) ... Room IV. From northeast.
Room IV upon completion of excavation ... AMS north 7334 Horizontal (normal) ... 1 Aug 1967 ... Room IV upon completion of excavation.
Room IV upon completion of excavation ... AMS south 7336 Horizontal (normal) ... 1 Aug 1967 ... Room IV upon completion of excavation.
Room IV, front door, 2 thresholds ... AMS Horizontal (normal) ... Room IV, front door, 2 thresholds.
