Between two sources- Loue and Pontet

Enigma difficulty :
Terrain difficulty :
Length : 2h30

Start the circuit at the car park of the source of the Loue N 47°00.433' - E 006°17.998'.
Head toward the source and take advantage of the source of the Loue and the duplication of Gustave Courbet's painting (be careful there is work in progress until May 2009 ... no entry during the work).
Now, go to a signboard « the greenhouse effect and renewable energies » with the following coordinates:
47°00.685'N - 006°17.920'E

Write down the 2nd word for each vignette which corresponds to the 5 major categories of renewable energies.
Count the number of letters for each word, write them out and decode a logical sequence ... there's only one number missing to put an end to this sequence.
Write down this figure 3 times in place of the X from the coordinates of the hunt:

47° W.XXX'N
006°17.YZ'E

We are told that a certain part of the electricty produced in France comes from water power. Write down this percentage and invert it in order to find W.

Now, follow the Loue and immerse yourself in the Nouailles Gorge, take advantage of this gorgeous landscape.

Continue on your way until you find a power station (EDF) with the following coordinates: 47°01.693'N - 006°17.075'E


In order to find Y, count the number of letters for the name of this power station, and to find Z, count the number of letters of the village for which this power station belongs to.

Now, you have the basics to find the treasure. Head toward the source of Pontet and the "grotte des faux monnayeurs", and don't forget to visit them once you finish the hunt.

This cache is part of the circuit « in the footsteps of Gustave Courbet ». You will be given a decoding key at each of the 4 steps, to get to the final cache. Write down the steps and punch this document: PDF Sur les traces de Gustave Courbet. You will be sent a gift by the local tourist authority according if you complete all the steps.