Splendid torrent descending a steepsided valley, begins its course in Spain and joins big Nive in "Bidarray".
The courses which it offer are of an easy access most of the time, a small road skirt it rather far in the mountain.

Fishing is however to disadvise the weekend, especially by good weather, indeed, the picnickers flow even of enough far (Spain) taking the expenses on its banks.

Bastan has the reputation to be the most difficult river of the Basque Country.
One of its assets major is undoubtedly that it is about the river which cleared up most quickly after an intense rainy episode.

Often its water is limpid, its being wary and selective trouts, but which wonder when the river is shown under its best day, with beautiful varied hatches, much of fish in activity, the whole within a sumptuous framework.

With its water of a great purity, it still conceals a population of "Desman of the Pyrenees", maybe you will have the chance to observe this small and very rare watery mammal.