Mark Zuckerberg‘s not building a doomsday ranch out in Hawaii … claiming reports of his 5k-square-foot basement have blown rumors about his Kauai home out of proportion.

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Here’s the deal … Bloomberg’s “The Circuit” posted uncut footage from their recent episode, where Zuck attempts to clear the air on last year’s WIRED report that he would have a 5,000-square-foot bunker under his Kauai compound.

The Meta CEO tells ‘The Circuit’s Emily Chang — with a straight face mind you — that it’s, “just like a little shelter,” boiling it down to essentially just “a basement.”

While Chang begins to crack up at the comments, he continues, “Whatever you want to call it, hurricane shelter whatever. I think it got like, blown out of proportion as if like the whole ranch was some kind of like doomsday bunker, which is just not true.”

Worth noting … Mark’s Hawaii home reportedly sits on 1,400 acres — so a 5,000-square-foot bunker just sorta fits the size of the property, and probably has tons of ways to pass the time in case of a zombie apocalypse!

Zuckerberg goes on to say the Kauai property is meant for ranching, with a goal of creating the highest quality beef in the world … just a “really fun project.”