Mark Zuckerberg is reportedly building a Hawaii compound with plans for an escape hatch, 'blind doors,' and an underground bunker

• Mark Zuckerberg is reportedly building a $100 million compound in Hawaii with some interesting features.
• It'll have an underground bunker, escape hatch, and a seemingly "blast-resistant door," per Wired.
• Known as Koolau Ranch, it'll also have at least 30 bedrooms and its own water supply, Wired reports.

If his latest property development is any clue, Mark Zuckerberg might be a biiit of a doomsday prepper.