Sensitive Natural Site of Marais de Vieille Morte

Located in the Bourg d'Oisans plain, the Vieille Morte is a sensitive natural site that owes its name to a former backwater ("dead arm") of one of the many of the meanders of the Romanche River, when it still flowed along its natural bed.

Descriptif Sensitive Natural Site of Marais de Vieille Morte

A number of springs emerge from this site, which is made up of humid woodland and swamps. These feed a network of small channels and ponds that help maintain and develop plant and animal life characteristic of humid environments, such as yellow-bellied toads, alpine newts, water shrews and marsh warblers. The site is also historical as it contains a number of ruins dating back several centuries.

Classification & labels

  • Espaces Naturels Sensibles
  • Wetland


Languages spoken

  • French



  • Unguided individual tours available permanently

Adapted tourism

  • Accessible for wheelchairs with assistance


All year round.


Free of charge