The Navajo Reservation in New Mexico is facing down a huge wildfire that is raging into its fourth day.

The blaze, called the Assayii Lake Fire, has burned more than 11,000 acres of land and is still uncontained despite hundreds of firefighters on the scene and multiple passes by aircraft dumping water and fire retardant on the area.

The fire is believed to have been caused by humans and has been driven by winds of at least 42 miles per hour according to Navajo Nation officials.  Sheep herding residents of the Chuska mountains were forced to evacuate from the area because of the uncontrolled blaze.

Navajo Nation officials told Reuters that the fire has burned out some of the reservation’s premiere grazing lands.  The authorities are trying to “protest culturally significant lands and historic sites” that are in the path of the fire.

Several communities have been ordered to evacuate and at least 50 residences have been destroyed or damaged by the flames.  More firefighters are being called to the site to try and control the flames.