Underground Town: Coober Pedy, Australia
The town of Coober Pedy
still exists and is home to more than 1,600 residents. It is referred
to as the opal capital of the world because it produces more opal than
anywhere else on Earth. The town consists of homes called “dugouts,”
which were built underground to combat the unbearable heat on the
surface and to keep their babies safe from dingoes and Australians.