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Why are the floors of some houses filled with sand and the flo | UNITED STATES OF SECRETS 🇺🇸

Why are the floors of some houses filled with sand and the floors of others with earth?

There is an assumption that explains it. Perhaps there was a disaster, a flood brought sand and clay and covered the first floors of some houses. Then no one lived in the houses for several hundred years, and during that time, a real cultural layer of earth accumulated. A door can only get buried if no one opens it. Then people came along and made doors out of second story windows in buildings already built. This theory could also explain why the old pictures and photographs were all overgrown with grass, bushes, and trees.

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