Considering that the block pillar sits on a molded base which is in phase with tufo slab floor 5692 and is highly similar to pillar 5471 which sits at the SE corner of the room and sits on a similar molded base 5754 which is in phase with tufo slab floor 5617 which seems to extend to include floor 5692 and considering that it is placed next to two courses of similar but rectangular blocks 5756 which run towards the E pillar but are broken by the (possibly) later threshold and also have a similar set at that pillar 5658, this might indicate the presence of an early phase monumental gateway to the complex with two pillars and a threshold.