- Volcano (Wikipedia)
A volcano is commonly defined as a vent or fissure in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.
- Christoph Probst (Wikipedia)
Christoph Ananda Probst (6 November 1919 – 22 February 1943) was a German student of medicine and member of the White Rose (Weiße Rose) resistance group.