1: 1. The Fairy Circles of Namibia

2: 2. The Door to Hell in Turkmenistan

3: 3. Mount Roraima in Venezuela

4: 4. The Underwater Waterfall in Mauritius

5: 5. The Richat Structure in Mauritania

6: 6. The Stone Spheres of Costa Rica

7: 7. The Blood Falls in Antarctica

8: 8. The Giant's Causeway in Northern Ireland

9: 9. The Moeraki Boulders in New Zealand

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