This section of wall seems to be present as a limit to a doorway between rooms H-9 and H-11 which was later plugged by 7354 and 7355.
This concrete portion of the wall appears to have been the southern limit of the plug with 7354 and 7355, plugging the 7353 segment of ashlar wall currently interpreted as a threshold.
Room H-10 area
Photo facing East
Photo facing West
Sketch of SUs 7332, 7336, 7351, 7352, 7353, 7354, 7355, 7356, 7357, 7358, 7359, 7360, 7361, 7362, 7363, 7398, 7399, 7400, 7401, 7402, 7402, and 7404.