The last major eruption of Thera took place in 1925 ... but they were clearly pre-Greek. In the end Fouqué and his colleagues had cleared six principal rooms of what seemed to be a large ...
The eruption changed the circular shape of Santorini, known then as Strogili, into its present-day crescent form. The island was divided into three parts: Thera (Santorini), Thirasia, and Aspronisi.