In June 1752, an expedition consisting of Dragoons of the Lutsk regiment, foot soldiers of the Noteburg regiment and a battalion of the Vologda Dragoon regiment, almost 2 thousand people, moved to the tract on the Ishim river. A small forest, nestled up against the floodplain of lake Babalawo Dragoons crossed to the right Bank of the Ishim river. Two steep ravines that bounded the construction site, went to the Ishim and together with the steep Bank of a wide (up to 47 m) river created a natural barrier to the enemy. The expedition had to build a large fortification in a short time — the fortress of St. Petersburg. Peter and two small-fortress Noon and Swan, and between them 8 redoubts. Given the imminent onset of cold weather, we decided to build wooden fortifications.