Hold on tight! (by Laura)

These unbelievably steep gradient road signs caused us much amusment when we first arrived in Chile.

Strategically placed nails, giving the impression of the load being strewn across the road, only heighten the effect.

The first time I spotted one, when on a little, tinny bus travelling through the southern lake district, I grabbed the sides of the bus expecting a rollercoaster-style ride down the hill.

Laura