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ELBERT COUNTY, Colo. -- Though the grass fire that began Sunday around noon just west of the town of Elbert ballooned to 600 acres, fire crews reached a containment level of 90 percent Sunday night.

The Elizabeth Fire Department reported the fire, which was dubbed the Country Road 102 Fire, began at approximately 12 p.m. off Country Road 114. The blaze caused the evacuation of about 100 people. The all-clear was issued around 4 p.m. Sunday afternoon.

There were 25 firefighters who managed to prevent the fire from entering a ravine that could have opened the door to destruction in the town of Elbert.

One firefighter was treated for chest pains and released. No homes were affected by the fire. Firefighters will remain on scene through the night to look for spot fires in the ravine.

This fire is separate from the Waldo Canyon Fire, which is burning approximately 35 miles southwest of Elbert.