Traces of several habitation structures were revealed during the excavations of 2008 undertaken in the prehistoric site of Kallamas. These structures were identified in the habitation levels of the Neolithic Age. Within the sondage D1, below a row of stones (locus 801) and perpendicular to the lakeshore, remains of a structure with an undefined function (probably a wall or a floor) and uncertain date, (though later then the Neolithic Age), were revealed. This layer contained the upper part of a broken pot, three completely preserved ceramic vessels, mud walls, and remains of various animal bones, including those of a wild boar. The pot is of a grey ceramic and contains barbotine decorations with vertical cannelures. One of the three vessels discovered has a globular body, cylindrical neck and is decorated with incised motifs, made before and after the baking process; the second one, doesn’t have a neck and contains a line of dots under the rim; while the last is very similar to a biconical cup.
Some of the stratigraphic units of the upper habitation levels of the Late Neolithic Age, discovered in sondage C1, are associated with scattered structures remains, such as rounded postholes of the vertical timbers, baked clay massifs of the wall sides (some of them still preserve traces of carbonized wood), clay nodes, hearth and oven fragments, etc. The most distinguishable habitation level was identified above the black layer of carbon remains. This level contained limes stones that formed a kind of ground platform, upon which ceramic fragments were laid.