The Hooverville camp is a symbol of how miserable people will be when they do not give in to the Over-Soul and work together. It is a dirty and horrible place: "There was no order in the camp; little gray tents, shacks, cars were scattered about at random. The first house was nondescript. The sout wall was made of three sheets of rusty corrugated iron, the east wall a square of moldy carpet tacked between boards, the north wall a strip of roofing paper and  astrip of tattered canvas, and the west wall six pieces of gunny sacking" (328). This description of one house in the camp is enough to show how terrible a place it was, totally unfit for human occupation. This symbol relates to the Over-Soul because no one helps anyone else, and that is the reason for the residents' miserableness. One man, the Mayor, completely refuses to help the Joads in any way when they arrive. This just shows how, when people deny that they are all part of one big Over-Soul and that they should therefore stick together, they end up living in misery.