Gyali Island

Gyali

Gyali is a Greek island in the Dodecanese archipelago in the eastern Aegean Sea (36° 40' N, 27° 7' E).

About 200,000 years ago a volcanic eruption occurred on the neighbouring island of Nysiros. During the eruption large amounts of hot pumice were thrown into the sea. The sea water suddenly caused the pumice to cool down, changing its structure and giving it its unique pozzolanic properties. Later, the sea bed rose and the island of Gyali was created, with one of the largest pumice deposits in the western hemisphere.

Geography

The island of Giali has a surface area of about 4.5 km² and consists of two hills connected to each other. The approx. 150 m high hill in the southwest of the island consists mainly of pure pumice. In total, there is currently a deposit of around 100 million tonnes of YALI® of the purest quality.