In around 1970, many young people who had to emigrate outside the valley in order to find a job, started to claim life for small towns, and provoked a sudden, .
When the so-called Groups for the Promotion of , the decadence of the five towns constituting the valley was apparent: they were more and more abandoned, and they had no relationship whatsoever with each other.
These Promotion Groups had enormous importance, as they made fundamental contributions in organization, coordination and planning (for instance, the creation of the and the Lealde and Herriola cooperatives).
With regard to planning, we must mention the Parents´ Associations of Lea and their Coordinator, as they were the defenders and promoters of the movement during Franco´s dictatorship; they were essential to overcome the difficulties forof that period. They were the legal defenders and promoters of the time, and thanks to them some activities spread to the whole region. For example:
Thanks to this movement, the Lea inhabitants were able to look at the future in a more optimistic way, and to organise. The following date from that period:
When democracy arrived, towns took on , and those who designed them became members of the councils, which had a decissive impact on their policy.