A short but dramatic stretch of the D900a road, from Verdaches to Digne-les-Bains (France), goes through the Clue de Barles, a narrow road going among deep canyons. It’s one of the French balcony roads.
This extremely narrow road is situated in Provence-Alpes-Cote d'Azur and belongs to the Alpes Maritimes. This amazing road is carved into the mountainside. It’s a road to die for (or die on, if you're not careful!). It runs as a single track road along the mountainside for some distance with nowhere to pass another vehicle. Here one says a prayer that nobody is coming towards you until the road widens some kilometres further.
There are some narrow sections -scarcely wide enough for two cars- where if two vehicles have to pass each other, one might have to reverse for some kilometers of winding narrow road to get to a place wide enough to pass. It shouldn’t be attempted by those who don't know how to reverse.
Along the road, that crosses Col du Fanget, there are several signs about the limited maximum height of the road, ranging from 2,8m to 3,2m. The clue is also known as Clue de Saint-Clément.
This road is one of the most famous balcony roads in the country. A balcony road is a hair-raising lane cut into the sides of sheer cliffs. It’s a kind of road not for those who fear heights. There is little room for error on these roads. Drive with care as this is a mountain road with hairpin curves and narrow unlit tunnels. When you take this road as picturesque as it is narrow, with its many surprising meanders, drive carefully, and above all don't miss the parking spaces that have been provided. The little town of Barles is situated at an elevation of 985m above the sea level, in the Bès valley.