Presnowka
Presnowka began as a fortified post on the Russian frontier in the northern Kazakh lake country. Built in 1752, it formed part of the new Ishim line, also called the Bitter Line after the chain of saline lakes along its course. Forts, smaller redoubts and watch posts linked Omsk with Zverinogolovskaya across the steppe, and Presnovskaya fortress was one of these strongpoints.