The so-called Pilsterstein rises up near Kothen. The rugged rock is not made of phonolite, as previously assumed, but of basanite. The Pilsterstein was formed around 30 to 10 million years ago during the Rhön volcanic period and is probably the remains of a volcanic vent.

This had filled with magma, which cooled and solidified into basalt. In contrast to most other basalt sites in the Rhön, the basalt here forms plates rather than columns.

After the surrounding, softer rock was eroded by weathering, the harder basalt was exposed. The Pilsterstein therefore belongs to the basalt hard rocks that are frequently found in the Rhön.

The Pilsterstein offers a magnificent view of the surrounding area. A beaver area can be seen at its feet. The large rodents have dammed up bodies of water here to create a suitable habitat for themselves.

Not far from the Pilster stone is the Pilster spring, also known as the "Kothener Sauerbrunnen". It is believed that there is a geological connection between the basaltic hard rock and the healing spring. There is a legend surrounding its discovery about a girl to whom a "white woman" appeared and proclaimed the healing powers of the spring. You can read the story on an information board at the Sauerbrunnen. And last but not least, you should try the water from the mineral spring. Why do you think the Sauerbrunnen is called Sauerbrunnen?

The Pilsterstein is located on the premium hiking trail Extra tour "The Mottener".