The plural form is important here. Because if the clay-limestone soil dominates, its profile varies a lot from one plot to another according to the relief, inclination, and exposure….It sometimes varies within the same plot of a few ares! The infinity of typicities that it contains offers as many possibilities in the cellars. In plural as well, because at Mignon-Boulard, do not expect a single large longitudinal cellar; the basements are full of corridors and nooks and crannies!