The underground shelter, which was revealed last year, prompted conspiracy theories on social media about wealthy tech moguls building doomsday bunkers.

Zuckerberg emphasized that the property, known as Koolau Ranch, is primarily intended for ranching and sustainable farming. He shared his goal of producing “the highest quality beef in the world” while integrating macadamia nuts and beer brewing into the ranch’s operations, which he described as a fun and vertically integrated process.