Which of these is NOT a name of a city in the main island of PLAYERUNKNOWN'S BATTLEGROUNDS?

The answer is Belushya Guba. This is because Belushya Guba is not a name of a city in the main island of Playerunknown's Battlegrounds. The game is set on a fictional island called Erangel, which features various cities such as Pochinki, Georgopol, Yasnaya Polyana, and Rozhok. Belushya Guba is actually in real life a village located on Novaya Zemlya, an archipelago in the Russian Arctic.