Dietzenley Vulkan & Keltenburg
GerolsteinAbout 2500 years ago there was a Celtic urbanisation with pastures on the Dietzenley. The Celtic urbanisation was protected by ring walls of up to 9 meters high and 4 meters wide against attacks.During the volcanic activity around 600.000 years ago, the area around the Dietzenley was covered with volcanic rocks. These rocks are used by the Celtics to build the ring walls.