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Blue flames of burning sulfur Ijen volcano in East Java has one of the most impressive sulfur deposits on earth. They are so hot that the sulfur often ignites - a mysterious display at night caught on camera.
Worst earthquakes of the 20th century More than 1.5 million people lost their lives because of earthquakes in the 20th century. Check the list of damaging and deadly quakes from 1900-1999!
Pearl of the Aegean Santorini is one of the most beautiful islands in the world, famous for its breathtaking sea-filled caldera and picturesque villages. Discover its fascinating natural and cultural history on a relaxed walking study tour with us.