In the indigenous tongue of the resident's of Australia's Coober Pedy, the town name means "white man's hole." The reason behind this name dates back to 1915, when European men began mining in Coober Pedy and found huge amounts of opal. White men have been digging holes to find the precious stone ever since. Today, more than 70% of the world's precious opal comes from this town. The population of the town is made up of more than 45 nationalities, making it one of the most diverse communities in Australia. However, the conditions here are extreme, which is why its residents live underground in "dugouts."