.bk J06 .fl S826cvp.j .fd dy journal .ed S826 .ei cVP .rd S826 .ri cVP k 74 dy In order to more clearly define the nature of the structure f166, a micro-sounding is opened in the broken area of the glacis. f 166 dy We opened a small rectangular square in the outer face of this structure, inside the already existing hole of the glacis, searching down the wall. In the south part is still going down, but in the north end the lower layers of bricks seems to be projected outside, giving the impression of a "glacis"-like or "dyke"-like. f 167 pr We open a small rectangle running along the outer face of the possible wall f166, to be able to understand better its nature. In this micro-sounding the upper part consist in ashy layers but under it, and mixed, we have a brickfall accumulation, with brown soil and pieces of broken bricks.