In 1970, Club Atlético Osasuna found itself at a crucial moment in its history. After an intense season in the Segunda División, the team, managed by the legendary coach José Ángel Ziganda, faced the final match under pressure to secure promotion to the top tier of Spanish football. The atmosphere at Estadio El Sadar was electric, with fans eager to see their team return to the place it belonged.

The campaign had been a rollercoaster of emotions, featuring memorable victories and bitter defeats, but the team held onto hope. In the final match, the opponent was CD Castellón, a club also vying for promotion. The tension was palpable, and every play felt like a battle. Finally, with a decisive goal in the last minutes of the match, the dream became a reality: Osasuna achieved the longed-for promotion.

This moment was significant not only for the club but also for the city of Pamplona. The victory united the fans in celebrations that resonated throughout the city. Los Rojillos, with their characteristic fighting spirit, proved they were worthy of competing at the elite level of Spanish football. From that point onward, Osasuna's identity was forged in struggle and determination.

The promotion of 1970 laid the foundation for the club's future and left an indelible mark on the collective memory of the fans. Since then, Osasuna has faced ups and downs, but that triumph remains a beacon of hope and a reminder of the power of unity and perseverance. The legacy of that season lives on, inspiring new generations of fans and players to wear the red jersey with pride.