By Linda Tancs
About 500 miles north of Adelaide in the Australian Outback is the subterranean town of Coober Pedy, where most of the town’s 1,800 or so residents live in underground shelters carved from the sandstone walls, giving new meaning to the phrase “a hole in the wall.” The place is worth a visit to explore the unique lifestyle enjoyed there, which also happens to be the opal capital of the world. Together with the surrounding region, it supplies around 85% of the world’s opal supply.
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