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Lost City or Natural Formation? Cuba’s Submarine Enigma that Still Divides Science · Global Voices

Summary by Azteca Jalisco
The case known as the “submerged city of Cuba” arose in the early 2000s, when an international expedition detected unusual structures at the bottom of the Caribbean Sea, near the Guanahacabibes peninsula. The finding was made by side-scanning sonar, a technology that allows mapping the underwater relief. The images showed shapes that seemed symmetrical, with straight lines and patterns that some interpreted as possible constructions.
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The case known as the “submerged city of Cuba” arose in the early 2000s, when an international expedition detected unusual structures at the bottom of the Caribbean Sea, near the Guanahacabibes peninsula. The finding was made by side-scanning sonar, a technology that allows mapping the underwater relief. The images showed shapes that seemed symmetrical, with straight lines and patterns that some interpreted as possible constructions.

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Azteca Jalisco broke the news on Saturday, April 18, 2026.
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