Murbach20 images Grand Ballon, 1423 meters. Grand Ballon, 1423 meters. Monument dedicated to the Blue Devils French mountain soldiers who fought during World War I, 1927. Monument dedicated to the Blue Devils French mountain soldiers who fought during World War I, 1927. Plain of Alsace. Guebwiller. Plain of Alsace. Guebwiller. Guebwiller in the plain of Alsace. Guebwiller. GérardmerHackenberg (ligne Maginot) Labels