Nowadays, we are hiding form virus. We should stay at home, and wear masks. We find it terrible, but can you imagine that there is something wrong? During the Cold War, people were prepared for the nuclear disaster. They built the shelters where they were going to hide from nuclear radiation. Can you imagine staying underground for months? Me neither. So, let's be happy that we don't have to use this Cold War shelter.
https://www.urbex-travel.com/cold-war-shelter/
https://www.urbex-travel.com/cold-war-shelter/