High Quality Content by WIKIPEDIA articles! The Vulkan Eifel (German: Vulkaneifel) is a region in the Eifel Mountains in Germany, that is defined to a large extent by its volcanic geological history. Characteristic of the Vulkan Eifel are its typical explosion crater lakes or maars, and numerous other signs of volcanic activity such as volcanic tuffs, lava streams and volcanic craters like the Laacher See. The Vulkan Eifel is still volcanically active today. One sign of this activity is the escaping gases, for example, in the Laacher See.