I figured that it has been disguised as a mere public fountain by an ancient order of the Celts these days, who themselves are undercover and pretend to be a bunch of urban planners. But there is no way to deceive my senses or to obscure my mind, upon which the unconcious knowledge of my forefathers, the very creators of this monument, is imprinted!
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My next mission will be to investigate and reveal the purpose of this ancient site. I suspect that it might be an early version of the continuum transfunctioner, a very mysterious and powerful device and it's mystery is exceeded only by it's power[1]!
It all makes sense, since there is also an ancient energy source present in this region. It is marked by the position of five mountains with flat, tree-less summits that are arranged in a large circle: Ballon d'Alsace, Schwarzwald-Belchen, Jura-Belchen, Petit Ballon and Grand Ballon. Looking from the Ballon d'Alsace, the summits of the Schwarzwald-Belchen and the Jura-Belchen mark the place where the sun rises on midsummer and midwinter respectively. The sun rises exactly from behind the Grand Ballon on the 1st of May, a celtic festive day.
Furthermore, Belenus is the name of the celtic sun god. Who dares to question the astronomic purpose of this pentagon of mountains and ancient source of energy anymore? This cannot be coincidence!
Those of you who want to dig deeper into the myths and secrets of the Celts, here are a few sources:
Belchen Datasheet ;-)
Magic Mountain Belchen
... and of course on Encyclopedia Galactica
All those articles are written in a secret language, I am afraid, and I am not allowed to translate. Not everybody shall be able to read the ancient scriptures! Unfortunately, many of these modern esoterics managed to acquire skills in reading what is not meant for their eyes *sigh*!