![Does my Underground Bunker FREEZE in the winter? Does my Underground Bunker FREEZE in the winter?](https://i4.ytimg.com/vi/7YgGmbns0fc/hqdefault.jpg)
Video by JerryRigEverything via YouTube
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Curious if my home made underground bunker will freeze in the winter. You might think that the cold earth would turn my bunker into a icebox, but nope! It is actually much warmer underground than it is above ground! About a 15 degree temperature difference!