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Parpaillon-Tunnel
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The Tunnel du Parpaillon is a historic and challenging mountain pass located in the majestic Cottian Alps of southern France. Situated at an elevation of 2,637 meters, it historically connected the Ubaye Valley in the Alpes-de-Haute-Provence department with Crévoux and Embrun in the Hautes-Alpes. This remarkable feat of 19th-century military engineering, a 520-meter long arched tunnel, was once a strategic route, though it is now permanently blocked due to a landslide.
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Höhenmeter 2.680 m
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faq
What is the current status of the Tunnel du Parpaillon?
The Tunnel du Parpaillon is permanently blocked due to a significant rockfall. In July 2024, a landslide occurred, and by 2025, local municipalities decided against repair, permanently sealing the tunnel with boulders. While the tunnel itself is inaccessible, the historic unpaved military road leading to it remains open for outdoor activities.
Are there alternative routes to cross the Parpaillon massif since the tunnel is blocked?
Yes, for those wishing to traverse the area, a challenging 1.2-kilometer footpath exists over the top of the tunnel. This alternative involves a 120-meter elevation gain and is considered a demanding 'hike-a-bike' effort for cyclists due to its extreme steepness and difficulty. Some sources strongly advise against this alternative for safety reasons.
What is the terrain and difficulty of the access road to the Tunnel du Parpaillon?
The access road, designated as D29 on the southern side and D39T on the northern side, is an unpaved military road, roughly 39.6 kilometers long. It is known for being rough, stone-filled, and bumpy. All-terrain vehicles, mountain bikes, or gravel bikes are strongly recommended due to the challenging terrain. It's considered an advanced route for both cycling and hiking.
How long does it typically take to hike or cycle the access road to the former tunnel entrance?
The time required varies significantly based on your chosen activity (hiking, mountain biking, gravel cycling), fitness level, and starting point. Given the 39.6-kilometer length of the unpaved road and the significant elevation gain to 2,637 meters, a full traverse or out-and-back journey to the former tunnel entrance can take a full day for most hikers and several hours for experienced cyclists.
Is there parking available at the trailheads for the Tunnel du Parpaillon?
Parking is generally available at the start of the unpaved access roads near Crévoux (Hautes-Alpes) and La Condamine-Châtelard (Alpes-de-Haute-Provence). However, specific designated parking areas might be limited, and during peak season, spots can fill up quickly. Arriving early is advisable, especially on weekends.
Are dogs allowed on the trails around Tunnel du Parpaillon?
Generally, dogs are permitted on trails in the French Alps, but it's crucial to keep them under control, especially in areas with livestock or wildlife. Given the presence of marmots and other alpine animals, and the challenging terrain, ensuring your dog is well-behaved and on a leash is recommended for their safety and the preservation of wildlife.
Is the Tunnel du Parpaillon area suitable for families with young children?
The main access road and the alternative path over the tunnel are considered challenging and are best suited for experienced hikers and cyclists. The terrain is rough, and the high altitude can be demanding. While older, adventurous children might enjoy parts of the journey, it is generally not recommended for families with young children or those seeking easy, leisurely walks.
What amenities like accommodation or food are available near the Tunnel du Parpaillon?
The area around the Tunnel du Parpaillon is remote. The closest villages with amenities are Crévoux and La Condamine-Châtelard. You can find accommodation, cafes, and restaurants in these villages or slightly further afield in larger towns like Embrun. It's advisable to carry all necessary supplies, including food and water, for your journey on the mountain itself.
Can you visit the Tunnel du Parpaillon in winter?
No, the access road to the Tunnel du Parpaillon is typically closed from October to May due to heavy snow and ice conditions, making it impassable for vehicles and extremely challenging for winter hiking or cycling. The high altitude means conditions can be severe, and avalanche risk can be present. It is best to visit during the summer months, from late June to early October, when the road is clear.
What kind of wildlife can be spotted in the Parpaillon massif?
The remote and wild environment of the Parpaillon massif is home to various alpine wildlife. Marmots are frequently spotted and often announce visitors' arrival with their distinctive whistles. You might also encounter chamois, ibex, and various bird species adapted to high-altitude environments. Keep a respectful distance and observe from afar.
Are there any permits required to hike or cycle in the Tunnel du Parpaillon area?
No specific permits are generally required for hiking or cycling on the public access roads and trails around the Tunnel du Parpaillon. However, visitors should always respect local regulations, especially concerning protected areas, and practice Leave No Trace principles to preserve the natural environment.