Between the Rhine and Eifel there are amazing relics: caves in which a robber submerged, a volcano as a geological rarity and a legendary secret passage that remains undetectable to this day. A journey of discovery to curious monuments.
Between the Rhine and Eifel there are amazing relics: caves in which a robber submerged, a volcano as a geological rarity and a legendary secret passage that remains undetectable to this day. A journey of discovery to curious monuments.