La Porte romaine de Bons

Roman door of Bons is an important vestige of the Roman road that ran through the Oisans.You can see it following a path from the hamlet of Bons.

As you leave the departure point in the hamlet of Bons, you are treated to a panoramic view of the Ferrand valley, Auris’ sunny slope and the Sarenne glacier dominated by the Pic Blanc. Then a footpath shaded by a cool deciduous forest will lead you to the “Porte Romaine”.

This ramble starts from Bons village, which is located below the resort (access in 10 minutes by car). You can park at the entrance of the village on the parking area near the fire-station. Make your way down to the chapel: the departure for Bons Roman Gate is then well indicated ( “Porte Romaine”). You will follow a small stony path down to the Roman Gate: it stands as testament of the Roman road of Oisans which was built in Augustus Emperor’s era (27 BC to 14 ) and probably used to pass there.

-La “Porte Romaine”, a monumental arch carved into the rock, is currently arousing growing interest from a historic and archaeological point of view. Many recent studies have reached the almost certain conclusion that the Roman road from Turin to Grenoble really did pass through this area
-The Roman gate in Bons

-In Mont de Lans:
Musée Chasal Lento
-In Les 2 Alpes: the international ski resort of Les 2 Alpes can be reached free of charge by ski-lift from Mont de Lans and the Maison de la Montagne in Les 2 Alpes
-Lac de la Buissonnière

This half monumental arch is today registered as French national monument. For more information about it, don’t hesitate to request the tourist office in Mont de Lans or les Deux Alpes. The heritage of Oisans provides evidence of human activity from the earliest times, such as the Bronze Age when copper was mined in the Grandes Rousses range. The number of historic remains grew as time moved on. The Roman period brought the Voie Romaine d’Oisans (Roman road), streches of which can still be seen today at Rochetaillée and Bons. From the Middle Ages, we have the village of Brandes, where the inhabitants operated a silver mine. More modern times are represented by the numerous chapels, oratories, wash houses, fountains, ovens and sundials which adorn our villages. Add to that the coal mines of l’Herpie, the silver mines of Chalance and the gold mines of la Gardette. Remarkable industrial architecture, such as the Les Vernes power station, resulted from the building of hydroelectric power stations in the Livet-Gavet valley.

Map and GPX marking

La Porte romaine de Bons

Getting There


From 01/05 to 31/10 : open daily.


Free of charge