Chilling footage captures detailed plans to turn hundreds of disused Army bunkers into the largest survival shelter community on Earth.
More than 5,000 people will be able to take cover at Vivos xPoint, near the Black Hills in South Dakota, US, during apocalypses and other disasters.
But they've been priced at a staggering $35,000 (£27,000) each upfront, and then a further annual rent of $1,000 (£790).
The clip shows how the former Army Munitions Depot, which used to store bombs for 25 years, are being transformed.
Water is pumped up from two wells and being stored within massive underground, reinforced-concrete tanks.
Onsite amenities will include, a general store, a members-only restaurant and bar, barbeque areas, a community theatre, hot tub spa, gym and medical clinic.