The Neste (; ) is a river in southern France, a left tributary of the Garonne. It is long. It rises from several sources around Saint-Lary-Soulan, central Pyrenees and flows through the following departments and towns:
Hautes-Pyrénées: Saint-Lary-Soulan, Arreau, La Barthe-de-Neste Haute-Garonne: Montréjeau
Two rivers, the Neste d'Aure and the Neste du Louron, join to form the Neste at Arreau. The Neste flows into the Garonne in Montréjeau.
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