Map of the first ring of fortifications of Lyon (France), the Rohault de Fleury defensive system (1831-1854). Legend:
 Fort
 Artillery battery
 Redoubt
 Warehouse
This file was derived from:

 Lyon Rohault de Fleury fortifications map-blank.svg: 
Lyon Séré de Rivières fortifications map-blank.svg:
Lyon_Rohault_de_Fleury_fortifications_map-blank.svg: OpenStreetMap contributors and Sémhur
Lyon_Séré_de_Rivières_fortifications_map-blank.svg: OpenStreetMap contributors and Sémhur
derivative work: Otourly