IGN maps are the French equivalent of Ordnance Survey here in the UK. They are beautiful maps perfect for use when exploring the mountains.
The 1:25,000 IGN maps that we stock here at Backcountry Books are just gorgeous. Maybe it's the fact that they cover some of our favourite alpine areas but they just seem so detailed and expertly produced.
We carry IGN maps for most the popular mountain destination in the French Alps, including the IGN maps for the Chamonix Valley, Ecrins IGN maps and IGN maps for the Trois Vallees and Tignes / Val d'Isere.
Check out the full range of IGN maps here.