Geomantie im Ruhrgebiet – Eine 1000jährige geomantische Landschaftsstruktur im nordwestlichen Ruhrgebiet – 206 p.- Neuss 2022 – The assumtion is, that this underlying “landscape structuring” by method of “squaring the circle” may be dating back to times of Emperor Charles the Great (from Aix-la-Chapelle – Aachen) – and if soo may be seen in context of the CAROLINGIAN RENAISSANCE (Abbey of Fulda, School Aachen and School of Reims), where they revisited the “HANDBOKK of ARCHITECTURE” by Latin VITRUVIUS, in which is a chapter on “GNOMONS”.