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Kolumbo, Underwater volcano in Aegean Sea, Greece.

Kolumbo is an active submarine volcano in the Aegean Sea northeast of Santorini. It rises from deep water toward the surface, creating a large crater with steep sides visible in sonar maps.

The volcano erupted in 1650, causing major changes underwater and affecting areas across the Aegean. This event shaped how people understood the geological forces in this region.

Greek maritime communities maintain records of the 1650 eruption through written accounts that detail the geological events and their effects on local populations.

The volcano sits deep underwater and cannot be seen from the surface without special equipment. Dive sites in the area allow experienced divers to explore the location and observe signs of ongoing volcanic activity.

Hot mineral vents on the crater floor release superheated water that would normally prevent life from existing. Yet tiny organisms have adapted to thrive in these extreme conditions.

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Elevation above the sea
-10 m
Part of
South Aegean Volcanic Arc
GPS coordinates
36.51703,25.49396
Latest update
December 18, 2025 11:40
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« Kolumbo - Underwater volcano in Aegean Sea, Greece » is provided by Around Us (aroundus.com). Images and texts are derived from Wikimedia project under a Creative Commons license. You are allowed to copy, distribute, and modify copies of this page, under the conditions set by the license, as long as this note is clearly visible.

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