top of page



Genbudo (Genbu Cave)

This is "must visit place" for geo lovers. The beautiful columnar and tabular joint were created by volcanic activity of 1.6M years ago. Matsuyama was the first to surmise "geomagnetic reversal” finding that rocks here and other locations were magnetized opposite. And Japanese name Geubu-gan(Basalt in English) were named after this place. The rocks were cut and used as material old days and the current hole(cave) is the remain.     (2018.May)



Akaishi, Toyooka, Hyogo

bottom of page