TRAIL Fournels (château and village): Small administrative area in northern Lozère. 11th century château in the middle of a charming little rural area. La Chaldette: Village housing a health resort. Chaudes-Aigues: Medieval town with health resort. Belvédère de Mallet: Endless views over Bès Valley from its prime location 300m above Grandvals Lake. Garabit: 564m long viaduct built over the Truyère River by G. Eiffel. Beautiful surroundings.