The Mai pond and the Moïles loop, in the towns of Vourey and Tullins, are the remains of the wanderings of the Isère in the middle part of its course. These spaces conserve wetlands with a rich and diverse fauna.

Several ancient meanders of the Isère, by deepening the glacial valley of Grésivaudan, have left their imprint of wet meadows and woodlands. These remarkable samples of meadows and alluvial forests make it possible to imagine the wild plain of Isère before the hydraulic and motorway developments. The interest of these sites is above all to conserve environments that have become rare today.
The presence of rare species such as the swamp ragwort, the reed sparrow or the Mercury borer confirms the interest of these sites. But the most remarkable habitats are the wet meadows with marsh orchids, also suitable for birds and marsh copper. The softwoods are home to many woodpeckers and wood-eating insects which are declining everywhere.
Playful supports allow you to discover its history, its formation and its use by man over the centuries.



  • School groups welcome
  • Groups welcome



  • School groups welcome
  • Groups welcome

Visit languages

  • French

Individual visit services

  • Unguided individual tours permanently

Group visits services

  • Unguided group tours permanently


All year.


Free access.



  • Theme trail
  • Parking lot