Opening of the Bonaigua pass road Historical milestone · Naut Aran, Val d'Aran, Lleida Image of Naut Aran, not of the place itself. The road of the Bonaigua pass, opened in 1924, gave the valley its first road link with the rest of Catalonia, although snow closed it for a good part of the year. Until then the usual access and the trade went through France. 1924 Photo: Alberto-g-rovi (CC BY-SA 4.0) What to see and do in Naut Aran