We ride on long extinct volcanoes, explore wild plateaus and charming little towns. The Tuilière and Sanadoire cliffs. From the orientation board, the two volcanoes seem to rise from the deepest depths of the earth like two guard soldiers over the valley. Under gigantic highway bridges following the river Sioule northwards until our forward drive is slowed down by a view of a bold structure. The viaduct of the Fade spans the Sioule river valley.