The size of this hole is so huge that people may come down into it on several Mi-8 helicopters, as they say. The place is situated not far from the largest Yamal gas reserve, a powerful underground stream is heard from
the bottom. What you can see around the hole is a forest, the soil around the hole was thrown out. No explosive works had been carried out in the area, so it's hard to explain why the hole appeared there.
The coastal turret battery № 981, named after Klim Voroshilov, is located on Russkiy Island, in the Russian Far East. It is about to celebrate its 80th anniversary. Built in 1934, it used to represent the combat power of
Russia in the Pacific Ocean, today it's part of an historic museum. The calibre of the battery is 305 mm. In all of the entire post-Soviet territory, a similar battery is only to be found in Sevastopol, Russia.