The fire was sparked by lightning last Wednesday. It is now almost 64,000 acres.
There is a mandatory evacuation for Tionesta.
The lava beds visitor center is threatened, and park superintendent Larry Whalon has evacuated.
“We’re doing everything we can to turn the switch off on this fire, but it is having behavior that we’ve not seen here in the lava beds,” said Whalon.
The Caldwell Fire is the largest of several fires in the ‘July complex’.
Evacuation orders are in place for some homes south of Tulelake and the Medicine Lake area.
Highway 97 (West) is currently closed at Highway 139. Highway 139 is open at this time.
The fire is 0% contained.