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Introduction to Plate Tectonics The Earth's upper, rigid layer is broken into several plates which are in constant motion to one another. Most earthquakes and volcanoes occur as result of these plate boundaries.
Worldwide earthquake activity level What is the level of global earthquake activity today compared to the past? Find out with our graph showing the current and past Global Seismic Activity Level indicator!
Raung volcano photos One of the largest and most active volcanoes in East Java, rarely-visited and relatively unknown Raung became (in)famous during its recent eruption in 2015 when its frequent ash plumes forced the repeated closure of Bali's airport.
Land of Theseus A relaxed walking and study tour to one of Greece's hidden treasures and also one of the least known volcanically active areas in Europe.