In the Andean foothills above Bogotá, an amorphous city has taken shape for over five decades. Hundreds of thousands of people from Colombia’s rural interior have migrated to the steep canyons, where red-brick settlements sprawl upwards into the hills. Recently they’ve been joined by thousands of refugees from Venezuela.

In El Paraíso, one of the more recent of these settlements, nearly everything has been improvised: the sheet metal rooftops, the tangle of overhead electrical wires, the narrow alleys-turned-stairways at the sharpest inclines, the walkway over a foaming polluted creek. Heavily-loaded trucks and crowded buses struggle up the hairpin roads. Newer housing, appearing seemingly overnight, clings precariously at cliff's edge. Ground-floor shops blare reggaeton, lithe bodies cast long shadows across concrete football pitches filled with raucous shouts, and car drivers lean heavy on the horns.

Now, above this haphazard and energetic sprawl, is an incongruous sight: black and red gondola cabins effortlessly glide overhead like apparitions from an Alpine ski slope. This mass transit gondola system, the TransMiCable, may be the most important new addition to life in El Paraíso (‘The Paradise’). The four-station system, completed in 2018, has for the first time linked the mass of underserved hillside slums known as Ciudad Bolívar, of which El Paraíso is but one small part, to the sprawl of greater Bogotá miles away.

In the morning, hundreds from El Paraíso make their way inside Mirador del Paraíso, the topmost of the TransMiCable’s stations. There’s a rare air of calm and order as heavily bundled and face-masked crowds are guided by uniformed station attendants into ten-person cabins. At work day’s end, they make their way back up.

Three years ago, this was not how residents of El Paraíso got in or out of their neighborhood. From El Paraíso, it would often take more than an hour to simply get to the plateau of Bogotá where economic opportunity was far greater than in the hills. Now it takes 15 minutes. It’s a project in social engineering, using mass transit to try to narrow the vast wealth divide in Colombia.