Coober Pedy is an Underground City in South Australia mainly inhabited by workers at the nearby opal fields, which are the largest in the world. The residences are underground to escape the scorching heat. A few years ago, a man fixing the stairway to his home found over 100,000 dollars worth of opal.
I have been to El Questro, but stayed in tents not the Homestead unfortunately, still a beautiful area to visit. The Kimberleys are stunning with a new view around every bend of the Gibb River Road - WA, Australia