The Styx (Russian: Стикс) is a small river in Perm, a left tributary of the Yegoshikha.
Seventeen thousand ago there was a paleolithic settlement Yegoshikha near the mouth of the Styx.
It was explored in 2003 by Kama Archaeological Expedition of Perm State University under the leadership of Andrey Fyodorovich Melnichuk.
[1] In 1804 by the order of Karl Fyodorovich Moderakh, a governor of Perm Governorate, a moat and earth wall were built in order to drain thaw and rain water from the fields to the Styx and Danilikha rivers.
[2] A part or border of Leninsky City District of Perm goes along the Styx.