A pleasant wooded section to start off, to the Col du Pré de la Dame pass. 
Then 3 km of gentle climbi on a pretty forestry track leads you to the Chalet de l'Aigle. Superb viewpoint over the Cévennes. A slightly steeper climb takes you to the top of Pic Cassini, at 1,680 metres the highest point on this trail. The route then goes gently downhill on magnificent paths. You finish on a trail in a fairy-tale forest. 

Follow the waymarks for trail #19.
Signposts will guide you all along this route, as well as yellow painted waymarks. In the description below, the signposted place names and/or directions are given in bold italics between quotation marks:

From "Mas de La Barque" head towards:

1.  “Les Écuries de Mas de La Barque”,


2. “Rochers de la Barque”,


3. “Gardione” (2x),


4. “Sous la roche fendue”,


5. “La roche fendue”,


6. “Lous Felzillas”. Then


7. “Sous le chalet de l’Aigle" and


8. “Chalet de l’Aigle”. Climb “Pic Cassini” via:


9. “col de l’Aigle”.


10. At “Pic Cassini” go to “Mas de La Barque” via:


11. “Ravin de la Levade”,


12. “Sous le pic de Cassini”,


13. “Malpertus”,


14. “Bois de Bellecoste”,


15. “Gardièze”,


16. “Martelet”, and “Mas de La Barque”.

This trail is taken from the guidebook Mont Lozère – Pays des sources, published by the Pôle de pleine nature du ont Lozère.