Kolumbo

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.

Location: Decentralized Administration of the Aegean

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