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Igneous or magmatic rocks The most primitive rock type forms when magma (molten rock) solidifies - either inside the earth (plutonic rocks) or during volcanic eruptions (volcanic rocks). A short overview.
Latest VAAC alerts The Volcanic Ash Advisory Centers provide near-real time global monitoring of volcanic ash plumes for aviation. Read the latest (or browse past) advisories.
Private geology tour on Santorini We offer you private geology tours to get to know the extraordinary geology and natural history of the island, but also aspects of the deep connection with its cultural history and archaeology.
Tour photos Sep 2018 Impressions from our Tour to Kamchakta during Sep 2018: northern group of volcanoes, Karymsky, and the southern plateau with Mutnovsky and Gorely.