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See the UK 'steepest street' with 40% slope that drivers should avoid

At Harlech's summit lies Ffordd Pen Llech, an incredibly steep street featuring a gradient of 28.6% and a cautionary sign ...

UK 'steepest street' with 40% slope that drivers are told to avoid

Nestled in the UK is a street with a daunting incline that has been recognised globally for its whopping gradient ...