The Trouée d'Arenberg is infamous for being the first five-star cobbled sector in Paris-Roubaix. The path is technically called the Drève des Boules d'Hérin, and the 2,300 metres of rough cobblestones are some of the worst in all of professional cycling.
The road was laid down in the late 18th century and has subsided since then due to mine workings beneath the forest. Jean Stablinski is credited with suggesting the inclusion of the sector in Paris-Roubaix and the Trouée d'Arenberg was first used in the 1968 edition.
