Bogny-sur-Meuse (French pronunciation: [bɔɲi syʁ møz], literally Bogny on Meuse) is a commune in the Ardennes department in the Grand Est region of northern France.
Bogny-sur-Meuse is known for multiple sites linked to the medieval legend of The Four Sons of Aymon, such as the Hermitage, the statue of Bayard the horse, and the four peaks symbolizing the four brothers.
In the 19th century, an industry of metalworking developed on the banks of the Meuse, with people fashioning bolts and other similar products in workshops.
A dividing line between strata of the Cambrian and Devonian periods runs north-west-south-east through the Hermitage and the quarries of the Pleines Roches above the Château Marcadet.
To the north of this limit, the rock is early Cambrian (between 540 and 500 million years), characterised by clear or white quartzites, green shales, and grey phyllites.