However, it is not necessary to travel so far from home if you are filthy rich and you see an apocalyptic future, because a California-based company known as The Vivos Group, is already building deep underground shelters, strong enough to survive future catastrophes and disasters, in various places. The South Dakota underground village is made up of 575 military bunkers, which were originally built by the Army Corps of Engineers in 1942, as a military fortress, which has been repurposed. About 10,000 people should be able to live in the underground village once completed.
Deep down under London, there is a nuclear-proof shelter standing at the ready in case of war. The prime minister and Britain's military leaders can gain access to the bunker, which lies deep beneath the Ministry of Defence, Whitehall. Photographs taken of the Pindar facility in 2008 show stockpiling of such items as toothpaste, toothbrushes, and mouthwashes.
Elon Musk the co-founder and CEO at Tesla, is planning to personally ride to Mars on one of his SpaceX rockets, taking other people with him to start building a colony there. Perhaps this planned flight to Mars is related to Musk's concerns about artificial intelligence, which he has said is more dangerous than nuclear weapons. He has also spoken about how a Mars colony would be a much better option for saving humanity in the event of an apocalyptic disaster.
Meanwhile, Sweden, operating in a more egalitarian manner, has about 65,000 bunkers, which will fit seven million people of the almost ten million population, in the event of war. Sweden's shelters can be identified by a sign showing a blue triangle in an orange square, with the word "skyddsrum." Switzerland, however, has enough nuclear fallout shelters to accommodate its entire population.