A petition is being launched by Casares Council to make Sierra Bermeja a national park.
It will be presented to the Environment Ministry in Madrid and can be signed at council offices.
Ecological groups have been long-term advocates of national park status and now the plan has received town hall backing following a devastating fire last September.
Sierra Bermeja with Sierra Palmitera and Sierra Real covers 20,000 hectares between Casares and Istan.
The Sierra is home to the pinsapo tree (Spanish fir), which only grows in Andalucía.