As you visit the site, you'll discover the historical and geological secrets of the spring, which has been considered the official source of the Marne for at least 2,000 years.
Going back in time, from the end of the 19th century to Jurassic times when this region was covered by a warm, shallow sea, this trail illustrates the processes that, little by little, led to the formation of the spring and the landforms that surround it.
Sentier de découverte de la source de la Marne
Localisation : BALESMES-SUR-MARNE
