Junction of the Propylon with the stepped retaining wall, west end ... AMS south 2687 Horizontal (normal) ... 7 Aug 1953
Junction of the Propylon with the stepped retaining wall, west end ... AMS 2688 Horizontal (normal) ... 7 Aug 1953
Middle section of the Propylon ... AMS south 3545 Horizontal (normal) ... 8 Sep 1961
