Mark Zuckerberg, the Facebook co-founder and Meta CEO, has addressed the swirling rumors about a supposed “doomsday bunker” hidden under his $270 million compound in Hawaii. Speculation about the underground facility had gained traction on social media, with many suggesting that the billionaire had created a 5,000-square-foot bunker below his lavish estate on the island of Kauai.

Given Zuckerberg’s position as the third-richest person in the world, many were not particularly surprised by the idea that someone with such immense wealth might invest in such a shelter. On Reddit, one user shared, “I would too if I was him. You know why? Because unlike the rest of us, he can afford to do this and be wrong. So the world doesn’t go to s***, big deal, you spent a small percentage of your fortune. But if it does, you’ll be fine while the rest of us fight over toilet paper.”
Another Reddit user wrote, “Let’s be f***ing honest. Every rich billionaire in the world already has a bunker and fully prepped for the society to end. Zucks is the only idiot who did it in Hawaii and got caught.”
A third commenter joked, “Maybe he’s just a really big Lost fan and he’s recreating Desmond’s bunker.”
Zuckerberg Clarifies the Purpose of the Shelter
While Zuckerberg did not dismiss the rumors entirely, he did clarify the purpose of the building under his sprawling estate. Speaking to Bloomberg, the Meta boss referred to the underground structure as a “little shelter” rather than a full-fledged doomsday bunker. He explained, “No, I think that’s just like a little shelter. It’s like a basement.”
Zuckerberg’s home, located on his 1,400-acre property in Kauai, is far from an ordinary estate. Last year, it was revealed that the tech mogul is in the process of developing an extensive compound that includes an underground shelter and over a dozen buildings. The compound will feature approximately 30 bedrooms and bathrooms. Two mansions on the property will be connected by a tunnel that also leads to the underground shelter.
Self-Sustaining Compound with Unique Features
In addition to the underground shelter, Zuckerberg’s compound is designed to be self-sustaining. The estate will house cattle, horses, a nursery, and organic farms, including a ginger and turmeric farm. The property is also equipped with its own water supply, featuring a water tank and a pump system, according to planning documents obtained by WIRED.

Controversy Over Local Land Use
Despite his efforts to create a self-sufficient haven, Zuckerberg’s compound has not been without controversy. In 2016, local journalist Allan Parachini penned a critical op-ed for the Garden Island, in which he criticized Zuckerberg’s decision to build a large rock wall in front of his 700-acre oceanfront property. Parachini urged locals to “tell Zuckerberg that abusing his stewardship of public beaches as if we are just another batch of Facebook victims is unacceptable.”
Conclusion
While the rumors of a doomsday bunker may have been exaggerated, Mark Zuckerberg’s massive compound continues to raise eyebrows due to its scale, self-sufficiency, and the secrecy surrounding its construction. Whether it’s a simple “little shelter” or something more elaborate, the project remains one of the most talked-about estates in the world, prompting ongoing discussions about the way the ultra-wealthy use their resources to create isolated, self-sustaining lifestyles.