In 1707 an undersea volcano breached the sea surface, forming the current centre of activity at Nea Kameni in the centre of the lagoon, and eruptions centred on it continue—the twentieth century saw three such, the last in 1950.
En 1707 un volcán submarino, formando o centro actual de actividade de Nea Kameni, e as erupcións centradas nel continúan - tres veces no século XX, a última en 1950.