I was watching a Youtube video on London public transport yesterday, and it mentioned that the main reason why the vast majority of London’s Underground network is north of the river is because, south of the Thames, the rock is different so it cannot be tunnelled through. Thinking about it, that made a lot of sense: I’ve often wondered why so much of the tube is concentrated in north London, and why south London seemed so neglected in that respect. To be honest I had just assumed it was down to economics, and because the majority of London’s wealthiest areas are in the north.
Knowing that the reason is more to do with geology is far more pleasing, to be honest. Now that I know that the issue isn’t down to money, though, I began to wonder about alternatives: If we can’t dig tunnels this side of the river, what else can we do? After all, good public transport is key to a growing economy and healthy society.
I was pondering this out on my trundle earlier, going through the beautiful Danson park, I was struck by an idea. At first it seemed so preposterous that it made me chuckle, but the more I thought about it the more I began to feel that I just might be on to something. If we can’t travel underground here, why can’t we travel over it? A couple of years ago, I wrote that I would love to see more cablecars in London: The London Cablecar, running between the O2 and City Hall, is awesome, so why not construct more? At the time I meant it as a joke, but if you think about it, is it such a silly idea?
What if a network of cablecars was somehow constructed across south London? They could transport commuters from area to area, ferrying them high across the cityscape. Most of South London is quite low rise, with not many buildings taller than five stories, so I think this might actually be possible. After all, I’m sure 150 years ago the notion of an underground train network, running beneath the metropolis between hundreds of stations, would have seemed just as absurd. Imagine it: a network of cablecar lines, possibly with several dozen stations, ferrying people across South London. The advantages of such a system seem obvious to me: It would mean that fewer people would need to use busses, reducing pollution. Also, far less existing infrastructure would need to be demolished than if the surface rail system was being expanded. All that would need to be built would be the tall, thin towers supporting the cables, presumably a few hundred metres apart; and the stations/termini, which would be far smaller and easier to construct than tube stations. The surface impact of such a system would thus be quite negligible.
Of course, I’m not sure precisely what this South London Cablecar Network would look like or how it would function: there are lots of questions for me to look into, such as whether the cablecars could travel between several stations, or whether they would just need to run between two points, like London’s existing cablecar. Further, where could such stations be built, and could the support towers be constructed between them? How large an area could the network be and how many lines could it have.
Nonetheless, I think this is a cool idea which could be taken seriously. Such a network would obviously be very expensive, although I daresay it would probably be cheaper than Crossrail. Wouldn’t it be awesome to be able to go from Charlton to Woolwich or from Eltham to Lewisham in minutes, floating peacefully above the cityscape below in a clean, accessible cablecar gondola? Could we one day hop on the cablecar like people in north London hop on the tube, to be effortlessly be taken from place to place? Naturally, these are just the ramblings of an ill-informed cripple who knows nothing about whether such a system is actually feasible, yet nonetheless I think it could be fantastic.