Carrefour de l'Arbre,France-April 13,2014:The cyclists Yaroslav Popovych (Trek Factory Racing Team) and Salvatore Puccio (Team Sky) riding in front of a group of riders on the famous cobblestone sector Carrefour de l'Arbre in Camphin-en-Pévèle town during the 2014 edition of Paris-Roubaix cycling race.