Check out the Australian city of Coober Pedy where half of the residents live underground: https://www.smithsonianmag.com/travel/unearthing-coober-pedy-austral

Check out the Australian city of Coober Pedy where half of the residents live underground: https://www.smithsonianmag.com/travel/unearthing-coober-pedy-australias-hidden-city-180958162/ https://www.smithsonianmag.com/travel/unearthing-coober-pedy...