Petropavlovsk-Kamchatsky is the city and the administrative, industrial, scientific, and cultural center of Kamchatka Krai, Russia. Population:

The city is situated on high hills and surrounded by volcanoes. The surrounding terrain is mountainous enough that the horizon cannot be seen clearly from any point in town. Across Avacha Bay from the city in Vilyuchinsk is Russia's largest submarine base, the Rybachiy Nuclear Submarine Base, established during the Soviet regime and still used by the Russian Navy. The city is located from Moscow  and about from Vladivostok.