It comprises the localities of Tafalla, Puiu, Garinoain, Barasoain, Tirapu, Biurrun-Olcoz and Muruarte de Reta, whose works are more complex three tunnels and a viaduct. Tunnels are: Cathedral (474 meters), Arce (258 m.) and Murugain (506.9 m.).

In addition, you will have several steps above and below to facilitate transit. The viaduct will have a length of 546 meters and will be built to save the La Majada stream. A train parking station will also be available at Garínoain to allow other trains to pass and to stop transport trains.

Against canyoning noodles

More than a hundred people met Tuesday afternoon in Lakuntza Square called by Stop AHT Polls and called for the paralysis of the polls taking place at different points in Sakana. It is not yet clear where the Navarre section of the TAV will coincide with the Basque Y, or from Ezkio and Vitoria.

The incidence of both would be very high: Ezkio's alternative would require the construction of a 22-kilometre tunnel under Aralar which, in addition to environmental damage, would greatly increase investment; the Vitoria-Gasteiz alternative would be easier and cheaper, but it would mean unfolding Sakana and increasing the saturation of the infrastructure already adding the old road and the TAV road to the highway.

From the point of view of time limits, work in Navarre is still very late and the dates indicated by the authorities are repeatedly delayed. The Territorial Cohesion Advisor of the Government of Navarra, Bernardo Ciriza, for example, pointed out in November 2021 that Castec-Campanas was to be built by 2026, but by then it will only be completed, if the announced deadline is met, the Tatreatments Campanas tranche now tendered.