First step was to dig 2 holes for the foundations. I made couple of steel rod frames (same system as inside the ceramic blocks) to be concreted under ground level.
They had to be level and perfectly positioned, or the arch would not connect at the top. Big board you see in the foreground of the photo is a template, assuring that perfect fit.
This part we practiced before and it worked really well.
This is another template, to make sure the top part of the arch will fit - before we start maneuvering it in place.