In the excavations conducted in 2008, the northern defensive wall of the castle was uncovered, which otherwise connected the north-western tower with the north-eastern tower, preserved to the full height of the roof construction. The northern wall extends over a length of 15.6 m to the arcades in the courtyard on the eastern wall of the castle. The wall is 80 cm wide and it was made of cut stone blocks in strong mortar. The sand in the mortar includes coarse-and fine-grained river sand. The wall was built of large and small cut stone blocks such that the blocks were arranged on the outer and inner face of the wall, and the middle filled with smaller blocks. The measured dimensions of the large blocks are, for example, 20 x 37, 36 x 42, 23 x 50 26 x 40 and 30 x 63 cm on the ground plan. In some sections, stone from an older building was probably used, as some of the blocks are stone blocks cut with high precision, and with sharp edges, such as the stone with dimensions of 26 x 40 cm; while some of the blocks have round edges, but straight sides, others have diagonal sides. The wall was preserved up to a very low height, so that it was not possible to identify stone layers of the wall facade. At a distance of 1.95 m from the outer periphery of the north-west tower, stone tiling was excavated, which passes vertically to the northern wall, cutting through it, and extends further into the castle courtyard. The tiling is 98-100 cm wide, and it turns westwards along the north-west tower at a right angle. The tiling consists of large and small stone tiles of irregular shape, with a delicately polished upper surface. On the inner side of the northern wall, the original nivelette of the castle's courtyard was partially examined. Stone tiles with smaller dimensions were excavated, arranged in an irregular net-shaped raster. Single stones were arranged vertically, imitating a fishbone pattern (imitation of opus spicatum). The find of the fourth (north-west) tower and a northern wall on the castle of Mali Tabor delineates a castle with four regularly arranged towers, forming the Renaissance layout, known from old (16th century) plans.
