What might it have been like to stand in one spot and witness the arrival, and the uncertainty, of plans for an urban motorway in West London?
It was the UK's only single-carriageway motorway, and twenty years ago it ceased to exist. This is the story of the strange fascination it held, and of my place in history.
The road that connects Wales together, but which nobody really uses... All five hours of the A470, from Llandudno to Cardiff, are here.
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