The ground in Santorini and Thirassia is a mixture of Thiraic earth, piritis, sand and pieces of pumice stone.

Due to quality of pumice stone and Thiraic earth, a great quantity of water is retained and that helps the cultivations.

The caves of the island tell a lot about Ancient Thira. The great importance of Santorini’s volcano, which is great for studies, made Santorini so well known. The today called Santorini’s volcano is the island of Nea Kameni and its highest point is the dome of George’s A`.