The bulk of the fire is threatening the Carrizo Plain National Monument, which is home to several endangered and threatened wildlife and plant species.

Madre Fire initially started 1:07 p.m. July 2 in San Luis Obispo County, California. Since its discovery 32 hours ago, it has burned 52,592 acres. A crew of 594 firefighters effectively contained 10% of the fire by Thursday evening.

The Madre Fire in eastern San Luis Obispo County continued to grow overnight as firefighters battled challenging conditions at the large blaze. According to Cal Fire’s Saturday incident report at 7 a.m., the fire has now burned 79,630 acres. Containment remained at 10%.