Template:Motd/2024-06-09 (en)

Blue holes are cave systems, flooded with sea water. How did the geological treasures develop thousands of years ago?

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This is the English translation of the Media of the day description page from 9 June 2024.

Descriptions in other languages:

• Motd/2024-06-09 (cs)
• Motd/2024-06-09 (en)
• Motd/2024-06-09 (fr)
• Motd/2024-06-09 (sl)
• Motd/2024-06-09 (uk)