I'm not sure. It might have some roots in truth, but it could also be a creation of the author's imagination. We don't have enough information to know for certain.
Since I don't have specific knowledge of this 'pile of lemons fanfic', it could be a creative and unique piece of writing. It might involve characters interacting with the pile of lemons in unexpected ways. For example, they could use the lemons to make lemonade to raise money for a cause in the fanfic's story. Or perhaps the lemons are part of a mysterious object that the characters need to figure out how to use or dispose of. It could also be a comical fanfic where the lemons keep getting in the way of the characters' plans.
Well, one might expect to find basic survival supplies like food, water, and medical kits. There could also be weapons for self - defense against any threats in the apocalyptic world.
The Greenbrier Bunker was a secret Cold War - era bunker. It was built under the Greenbrier resort in West Virginia. It was designed to be a place where Congress could be relocated in case of a nuclear attack. It had all kinds of facilities like dormitories, cafeterias, and communication rooms to ensure that the government could continue to function during a crisis.