The Green Line

Using sun pipes and LED technology, this project would reinvent the commuter experience.

This montage shows how the natural environment could be introduced below ground.

The Green Line would be a add a green infrastructure layer to the existing Tube map.

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The Green Line

New roots for London's green infrastructure

The Green Line aims to bring green infrastructure to the subterranean transport links that move us between the parks and open spaces on surface.

Spreading outwards from Westminster, this proposal would be rolled out through one station at a time and would involve installing sustainable technologies such as sun pipes and LED lamps (run on renewable energy from photovoltaic, kinesynthetic, geothermal and hydroelectric sources) to provide the right conditions for creating green spaces below ground.

Trees, living walls and even small-scale food production would bring green infrastructure underground, softening the hard tunnel landscape and improving air quality for commuters in this typically busy and stifled environment.




All London

Submitted by

Terra Firma

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