Janneyrias: Natural Areas, Hiking Trails and Heritage

The Marais de Léchère-Merlan and the “Autour de Janneyrias” route represent different natural features around Janneyrias; Malatrait adds historical associations. If you are looking for a hotel in Janneyrias, you can prioritize your travel interests: an easy hike with specific route details, a wetland and its habitats, or the history of former structures. The following local and route features can help guide you.

Natural Areas and Water Levels

The Marais de Léchère-Merlan ZNIEFF area includes Janneyrias and covers 19.4 hectares. It is a peaty alder-ash woodland with a diverse, specialized flora. Its characteristic habitats include alluvial forests of ash and alder on soils that are flooded during high water and drained during low water. The alternation between flooding and drainage makes the water level an essential feature of this habitat. The species composition may change over time. The area figure refers to the marsh, not the entire municipality.

Hiking Around Janneyrias

The “Autour de Janneyrias” route is an easy hike covering 4.3 kilometers. It has 59 meters of elevation gain and an estimated duration of 1 hour and 25 minutes. These details help with different planning questions: the distance describes the length of the route, the elevation gain its ascent, and the estimated time provides a timeframe. The route leads to the Étang des Portions, where hikers can observe the scenery and wildlife, and continues to the ruins of the Château de Malatrait. Since route details may change, check the latest information before setting out.

Cultural History and Memorial Sites

The “Autour de Malatrait” walking route passes the former Chapelle Saint-Ours, which also serves as an aircraft noise monitoring station. Check the route description before your visit, as details of this kind may change.

The Malatrait fortification once included a chapel and a dovecote. Both were demolished because they posed a danger to walkers.

The Mémorial de la bataille d’Anthon is located in the Bois des Franchises. This named memorial site adds another specific point of interest to the area’s historical themes.

Planning Your Visit

Rules governing access and paths apply at the Marais de Montanet to protect the biotope and the protected species found there. Authorities may update these requirements, so check the current guidance before visiting.

Transisère is a source of transport information for Janneyrias. Before traveling, check the information relevant to your travel date if you are coordinating your journey and overnight stay.

Two Routes, Different Highlights

When choosing between the two walking routes, consider which information matters most to you. “Autour de Janneyrias” is rated easy and provides specific details on distance, elevation gain and duration; the route leads to the Étang des Portions and continues to the ruins of the Château de Malatrait. “Autour de Malatrait” passes the former Chapelle Saint-Ours, which also serves as an aircraft noise monitoring station. The first route provides more figures to help you estimate the time required; the second links a historic site with a monitoring function.

Discover more destinations: Cheyssieu, Dionay, Le Bourg-D'oisans, Gières, Grenay, Montcarra, Jarrie, Saint-Baudille-De-La-Tour.

Go to the main travel overview: Isere.