'Green week' is a programme sponsored by the Bertiz Tourism Consortium and the Navarra Institute of Youth and Sport, and entrusted to Navarra Aventura BKZ. The programme is set up for secondary school students (aged 14 to 17) enrolled in schools throughout Navarra.

This 3-day programme includes accommodation at the Valle de Baztan Youth Hostel in Lekaroz and three water adventure activities: Rafting , Canyoning and Kayaking or Hydrospeed. Also included are activities such as a visit to the Urdax caves, Basque 'Herri Kirolak' rural sports events and other cultural activities.