Fantômas by Pierre Souvestre

Twelve or thirteen miles from Souillac the main line from Brives to Cahors, which flanks the slope, describes a rather sharp curve. The journey is a particularly picturesque one, and travellers who make it during the daytime have much that is interesting and agreeable to see; but while they are admiring the country, which marks the transition from the severe region of the Limousin to the more laughing landscapes on the confines of the Midi, the train suddenly plunges into a tunnel which runs for half a mile and more through the heart of the mountain slope. Leaving the tunnel, the line continues along the slope, then gradually descends towards Souillac. Two or three miles from that little station, which is a junction, the line runs alongside the highroad to Salignac, skirts for a brief distance the Corrèze, one of the largest tributaries on the right bank of the Dordogne, and then plunges into the heart of Lot.

Torrential winter rains had seriously affected the railway embankment, particularly near the mouth of the tunnel; a succession of heavy storms in the early part of December had so greatly weakened the ballast that the chief engineers of the Company had been hastily summoned to the scene of the mischief. The experts decided that very important repairs were required close to the Souillac end of the tunnel. It was necessary to put in a complete system of drainage, with underground pipes through which the water that came down from the mountain could escape between the ballast and the side of the rock and so pass underneath the permanent way. The sleepers, too, had been loosened by the bad weather, and some of them had perished so much that the chairs were no longer fast, a matter which was all the more serious because the line described a very sharp curve at that precise spot.