Ep 4. Trains of the Abyss

Impossible Engineering is a captivating documentary series that travels the world to explore some of the most mind-boggling feats of engineering ever achieved. In season 4 episode 4, titled "Trains of the Abyss", viewers are taken on an adrenaline-filled adventure deep into the heart of Colombia's mountainous region where locomotive engineers dare to take on one of the most dangerous railroads in the world.

Throughout the episode, we are given an in-depth look at the Ferrocarril de los Andes railway, better known as "The Devil's Nose". This breathtaking railway stretches across 101 kilometers of narrow tracks that climb up steep mountain peaks, traverse over vertigo-inducing bridges, and navigate tight curves that take daring train drivers through the plunging depths of the Andes mountains.

We're introduced to the innovative engineering mastermind behind The Devil's Nose railway, which was was built more than a century ago using nothing more than manual labor and the strategic use of TNT explosives. With the help of dynamic computer-generated imagery, we are able to see how this railroad connects the balmy coast and the icy heights of the Andes, taking on gradients that reach as high as 5,000 meters above sea level.

The episode also takes a closer look at the challenges that the engineers face while operating these trains. With such steep inclines, braking is nearly impossible, and the carriages can quickly become hazardous, with the wheels having the potential to fly off the tracks. So-called "brakemen" are needed to constantly walk along the sides of the train, using both their feet and hands to control the speed and balance. We're also shown how the locomotives of The Devil's Nose railway were built specifically for this terrain, with specialized systems that allow them to climb steep 45-degree angles.

Another captivating aspect of this episode is the focus on the astounding architecture of the railway stations. These stations were designed using techniques that blend Gothic and neo-Classical styles, resulting in enchanting buildings that add an extra touch of grandeur to the already awe-inspiring landscape.

The makers of Impossible Engineering really capture the thrill of the journey on The Devil's Nose, from the perilous climbs across deep chasms to the lightning-fast descents that leave passengers feeling like they're suspended in mid-air. Despite the risks, The Devil's Nose railway continues to serve as a crucial link for cargo and passengers traveling through this region of Colombia.

In conclusion, if you're into trains, engineering, travel, or just appreciate jaw-dropping spectacles of human ingenuity, "Trains of the Abyss" is an episode not to be missed. From the fascinating history of The Devil's Nose railway to the harrowing challenges faced by those operating it, this episode delivers a truly unforgettable experience that will leave viewers breathless.