6 Hidden Underground Shelters that Will Survive DoomsdayExplore further
2020-1-23 · For individuals who want an underground bunker on their own land, the Quantum model is the best choice. They are 40' long x 8' wide x 8.5' and can comfortably hold 6-8 people. One of the more notable features of the Vivos Quantum shelters is that they can be hooked up to an underground well.
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