The Road of Firs The Road of Firs is a 140-km itinerary designed to discover the forest, green pastures, lakes and historical villages in the mountains of Ain. Let’s experience the charm of a promenade in the country air! It is accessible by bicycle, motor bike, car or a small bus. Information: Tourism information of the Hauteville plateau - 01110 Hauteville-Lompnes -Phone: (33)-4-74-35-39-73 - Fax: (33)-4-74-35-24-68