It goes down the western fortification wall from the northern fortification wall of Skopje fortress. The excavations take place on a 40 m long and 10 m wide area. The most recent archaeological finds that were the ruins of the old Archaeological Museum (barracks from Ottoman times that were used as a museum after World War II until 1963 earthquake). The later cultural layers are made of waste pits of late middle ages, in the period of XV to XVII century and previous centuries. One of the most important archaeological finds of this cultural layer is the stone mould for casting of gold rings with a representation of Lazarus cross on one side, broadly dated for the period of XI-XIV century.
At a small space north of the ruins of the Archaeological Museum, part of a medieval house was discovered; according to the archaeological material (mainly pottery), it was used in the period between the second half of XIII century and early XIV century. The house is made of mud brick walls, with an earth floor and a light roof construction of organic material. It was burnt, but nevertheless most of its inventory is well preserved (storage pots and kitchen pottery, as well as several Byzantine bronze coins).
The oldest finds in Sector 1 date from the Eneolithic and they are ruins of a semi-subterranean dwelling, which is not fully researched, that is, only its eastern side is discovered. The dwelling was dug into a semi-circular basis frame, floor level is made of packed clay with which the frame is covered, the walls were made of woven mats, and the roof construction of beams connected with reed. Two hearths are discovered in this house, one of which with a round basis, and the other with an ellipse-like basis. On its southern side, this house is cut by the foundations of the walls of the Archaeological Museum, and on its western side it is cut by a newly discovered fortification wall.
The vestiges of this fortification wall are in different stages of preservation along the complete north-west side. According to the scope of building, material, direction and stratigraphic position, it is most probably part of the north-west fortification canvas of the inner monumental, so-called Cyclop wall. This wall most probably ends on the northern side, that is, it joins the tower on the north-west corner of the inner fortification wall.