circuitous engineering on the Chemin de fer de Castres à Murat-sur-Vèbre, France

The upper cutting was obviously for a road.

The meter-gauge railway was built between 1905 and 1911 and began at an altitude of 170 meters. The highest altitude was 905 meters reached just before the terminus.

The difference was overcome thanks to an almost continuous ramp over the 75 km of the journey, which reached 4%.

Shortly after Laparayrié-Beaudecamy was the series of three viaducts in the picture. The longest tunnel was that of Teillède at 720 meters.

The line closed in 1962.