Volcanoes to explore in Germany
Country with the largest population in Europe. Stretches from the North and the Baltic Sea in the north to the Alps in the south. It is traversed by some of Europe's major rivers such as the Rhine, Danube and Elbe.
An extinct volcano with the ruins of a castle on its top. Hohentwiel began forming, along with the chain of volcanoes in the Hegau region, about 7–8 million years ago. Hohentwiel Castle, whose ruins are on top of Hohentwiel, was built in 914 using stone taken from the mountain by Burchard II, Duke of Swabia.