Tufo block is likely in secondary deposition on top of mosaic 7398 as the mosaic runs underneath it. Does not seem to be associated with wall 7356 as the block is not in line with the wall and does not directly abut it. Possibly associated with drainage feature on the other side of 7356.
View from east
View from north
Room H-10 area
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.