Duckett Fire 80 Percent Contained

SALIDA, Colo. (CBS4)- The Duckett Fire burning in southwest Colorado near Westcliffe was 80 percent contained on Sunday.

Approximately 100 firefighters are on scene. Major efforts to fight the fire are along the southwest part of the blaze where steep terrain and dense fuels have made line construction difficult.

Fire activity increased on Saturday, adding about 100 acres to the fire's size. Sunday morning, fire managers used aerial resources to slow the fire activity.

So far, it has cost nearly $5 million to fight the fire. No structures have burned.

The fire started June 19 in the San Isabel National Forest. Authorities suspect it was human-caused, but the cause remains under investigation.