News World Know about the underground Opal city of Australia

Know about the underground Opal city of Australia

New Delhi: Known as the Opal capital of the world, Coober Pedy is a town in South Australia.The interesting fact about this place is people live underground.This cavernous community was built by miners sheltering from

 



The Opal gem was discovered by a European explorer Wille Hutchison in 1915.

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