That’s what I assumed. I’m sure you could make this without that arm being a pillar, but it’s a slightly odd position that obviously they used it for support. Still incredibly impressive, and honestly it only adds to it in my opinion that they had the foresight to extend the arm down to act as a column. I’m sure it wouldn’t have lasted long without it.
Hard to tell from the crop, but if the arm is touching the ground that’s a third support pillar.
It does indeed touch the ground and act as another pillar.
That’s what I assumed. I’m sure you could make this without that arm being a pillar, but it’s a slightly odd position that obviously they used it for support. Still incredibly impressive, and honestly it only adds to it in my opinion that they had the foresight to extend the arm down to act as a column. I’m sure it wouldn’t have lasted long without it.