This trap door leads down to an underground bunker. – Source: http://www.offgridquest.com/homes-dwellings/building-methods/944-the-door-on-the-ground?showall=&limitstart=
This trap door leads down to an underground bunker. – Source: http://www.offgridquest.com/homes-dwellings/building-methods/944-the-door-on-the-ground?showall=&limitstart=
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