A human-caused fire that began in northwestern Montana over the weekend has spread to 80 acres and has started eight spot fires in Glacier National Park.
Flathead National Forest spokeswoman Ema Braunberger says firefighters were being taken by boat across the North Fork of the Flathead River to work on the spot fires after efforts Sunday to hike down to the area failed because it was too hot and crews couldn't take enough water.
Ninety firefighters are working on the blaze, which started Saturday in a gravel pit north of Columbia Falls. It was 25 percent contained Monday morning.
Crews were preparing for the possibility of thunderstorms and gusty winds on Monday afternoon. Eight homeowners were warned they may have to evacuate.
The fire was human-caused, but Braunberger says officials don't know how it started.