The "Kottenheimer Büden" on the eastern flank of the Bellerberg gives an insight into the origins of the Bellerberg volcano and originated about 200,000 years ago when lava bombs and shreds were thrown out of the volcano by violent explosions and piled up into a mighty slag wall. The mysterious "Siewe Stuwe" are caves carved into the basalt lava, which served as air shelters during World War II - primarily for women and children. The Traumpfad "Vulkanpfad" connects the volcanic park stations Ettringer Bellerberg, Kottenheimer Winfeld and Kottenheimer Büden over a distance of about 7 kilometers.