Survivalist property developer Vivos has created a global underground network of apocalypse shelters. Vivos xPoint, pictured here, is located in the Black Hills of South Dakota and features a total of 575 converted military bunkers, which can house 10 to 24 residents across 2,200 square feet (204sqm).

Vivos xPoint is strategically located within a 24-hour drive from most locations within the mainland US and over 100 miles (161km) away from the nearest military nuclear targets.

The units cost around £41,600 ($55k) each and can be fully furnished by Vivos for an additional fee, which makes these affordable bunkers well within reach for many. Vivos has a range of other survivalist complexes across North America and Europe, too...

8 military bunkers that were transformed into underground palaces