Hot index is not rating, it reflects the extent of how tourists know it. Hot index is nothing to do with whether the attraction is good or not, an attraction that everyone knows may not be good, one that nobody knows may not be bad.
1: Almost no one knows
2: Rare people know
3: Some people know
4: Most people know
5: Everyone knows
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Opalios is located in the inland desert of South Australia, the small town of Coober Pedy., known as the "underground city".
Coober Pedy is rich in opal (Opal, Opel, Australian gemstones, etc.), is the world's largest opal production area, surrounding more than 70 mines covering nearly 5000 square kilometers, the majority of the world's opals are produced here, It is known as (Opal Capital of The World), the capital of Australian treasures in the world.
Opalios is a family business founded in 1973, still mining opal in Coober Pedy today, has its own retail stores in the town of Coober Pedy, sells all kinds of fine Australian treasures, and can be cut and made in the field. Coober Pedy is known as one of the most famous Aobao retail stores.
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