BARBIS TRACK
Track built by the Barbis (sappers of the national side) to improve communications and thus travel around more easily between the positions and the Pueyo Sanctuary. Half-way along it and on a large stone there is a plaque with the inscription: “Z-M-5 PISTA LOS BARBIS MCMXXXVII 3 SECCION” (Z-M-5 BARBIS TRACK MCMXXXVII 3 SECTION)