in the campaign “Night Attack on the Aul of Topli, Burning of Germenchuk, and Coercion of the Nokhchi to Fell Their Own Forests (1820)”
The Russian Empire placed a chain of fortifications on the land taken from the Nokhchi to consolidate the seizure and hold the population in submission. Historian D. A. Khozhaev writes that Yermolov, moving the Caucasian Line to the Sunzha, was "squeezing unsubdued Chechnya with new fortresses and fortifications," and that "on the occupied territory fortifications were built… Neotstupny Stan, Zlobny Okop, Vnezapnaya (1819), and others"[1]. The imperial historian Potto confirms that in the summer of 1820, having barely finished the Germenchuk clearing, Grekov "set about felling the forest along the Sunzha and building on the cleared glades two new fortifications: the Ust-Martan redoubt and Zlobny Okop," and on the site of the demolished Kachkalyk village of Isti-Su he placed "Neotstupny Stan"[2].