To me Coober Pedy is a cross between the Big Thunder Mountain Railroad ride at Disneyland and a strange town in the desert like Las Vegas, not quite real.
Does this look like a thriving town with 3500 residents? The odd landscape is because many of the people live underground in dugouts to escape the fierce summer heat. Pipes sticking out of the ground indicate there is a surprisingly normal home below. We even visited an underground church.
The main street comprises tacky Opal sales outlets and basic necessities like supermarkets, a bank and petrol stations. On the edge of the town they have a golf course that doesn’t have a single blade of grass, just stones with the greens marked with sump oil.