= spaces available= guaranteed= few spaces left= booked out
Colima volcano, Mexico: explosive activity Feb 2015 - ash plumes
Mild to moderate explosive activity occurred during 22-28 Feb at irregular intervals, ranging from few minutes to several hours. Most stronger explosions were preceded by longer quiet phases lasting up to 7 hours.
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.
Ethiopia and the Danakil Ethiopia is a very diverse and beautiful country. Thanks to our numerous expeditions to Erta Ale and Dallol and beyond, we have an extensive collection of images showing the volcano's lava lake, the desert, the colorful hot springs of Dallol, the vast salt lakes, camel caravans and more.
Redating the Minoan eruption of Santorini A 3600 y.o. fossil olive tree discovered in the Minoan pumice allows to refine the date of the Minoan eruption on Santorini to the 17th century B.C.