07-Sep-2014 -- We spent a few days hiking in the french Alps during the first days of september and this was the perfect occasion for visiting 45N 6E which happens to be the highest CP in France.
We started the hike from the wooden bridge in Chantelouve and followed more or less the same itinerary described by S. Picot and R. Mautz. The weather was wonderful and we reached our final position after a 4 hour hike. We experienced extreme difficulties to zero the position because my GPS receiver began to lose continuously the satellite fix in the final part of our hike.
The usual confluence dance was exhausting this time on this very steep slope.
We ultimately gave up our try at approximately 50 m from the CP. Interestingly, the 45th parallel is materialized by 2 road signs on each side of the road between Bourg d'Oisans and Chantelouve. Standing on the road near the signs and looking east you can see the summit overlooking the CP named "Le Grand Renaud" at 2776 m of altitude.
We also would like to emphasize the nice Roman bridge that can be found at 45°04'53"N 6°04'09"E after a 800 m walk from the road between Bourg d'Oisans and the ski resort of l'Alpe d'Huez (Picture 8).