The authorities in the affected regions, Behbahan and the neighboring Kohgiluyeh and Boyer-Ahmad provinces, have reportedly struggled to contain the blazes.
Despite the deployment of two Red Crescent helicopters, local media report that the fire remains unchecked.
The fire, which ignited on Monday afternoon, has reemphasized concerns among observers about the vulnerabilities in Iran's nature reserves and the state's failure to protect these critical areas.
Azam Bahrami, an environmental activist, spoke to International, highlighting the lack of effective planning for such disasters: "There is no proper planning in place in Iran to deal with such fires," she said, pointing out flaws that exacerbate the situation in Khaeez and the broader Zagros region.
Confirming extensive damage, Hamzeh Mohaqeqzadeh, the governor of Kohgiluyeh district, reported that large areas of farms, grasslands, and plant life have been consumed by the fire.
Environmental activists have long advocated for more effective firefighting strategies, especially in terrains characterized by mountainous regions, dry vegetation, and strong winds, as these measures could help prevent such disasters.