This is one of the Kuril islands, the ones that were once Japanese. These were heavily used by the army as they are almost on the border and public access was very restricted previously. However nowadays there are agencies organizing tours to these places so the photographer took one
such tour and here are the photos of the location, which was once upon a time closed to tourists. Beautiful, untouched for years, nature, foggy atmosphere, remains of German and Japanese military hardware - this is what you are going to see in the photos inside.