The first, at the edge of the Temple Terrace Wall and just west of J2 (the monumental access area), aimed at checking the consistency and structure of the Terrace packing just inside the perimetral wall,and also at determining the solidity and stability of the wall itself. It yielded important answers to those two rquestions, but it also provided unexpected information about the date of the top of Wall and Terrace as we have them today.
A second sounding was opened at a distance of 15 m from the face of the wall, to provide further information about the nature of what we consider to be inert deposits above the floor of the Plaza.
