This is the 8029th most frequent Russian word.
краснокаменске
"Краснокаменске" is the prepositional case form of "Краснокаменск," a town in Russia.
the word 'Краснокаменске' is used in its Locative (prepositional) case form to indicate location.
Я живу в Краснокаменске.
I live in Krasnokamensk.
Here, 'Краснокаменск' is in its base nominative form as it is the destination of motion.
Мы едем отдыхать в Краснокаменск.
We are going to Krasnokamensk for vacation.
In this sentence, 'Краснокаменском' is in the Instrumental case form to denote the subject being admired or the cause.