Firefighters who were heading out of town Sunday before being called to fight another fire may finally get to leave Tuesday night.

Rick Acosta, spokesman for the U.S. Forest Service, said the Vivian Park Fire that has scorched more than 250 acres on the South Fork of Provo Canyon should be contained by about dark Tuesday. More than 250 firefighters will spend the day putting out hot spots and building a perimeter around the fire."We'll be demobilizing after this shift," Acosta said Tuesday morning.

The fire started about 5:30 p.m. Sunday near the road and raced up the hillside. Air drops of water and retardant Monday kept flames from going over the east ridge. Many of the 480 firefighters that spent the week fighting the Tank Fire were dispatched to the new blaze.

The Tank Fire burned more than 3,100 acres on the face of Timpanogos Mountain. The fire is contained but not extinguished. About 200 firefighters are still working on hot spots.

"We'll take care of those as they crop up, but we still need some help from Mother Nature," Acosta said.

Officials say the cause of the Vivian Park Fire is unknown, but lightning is not suspected. The Tank Fire was started by two Orem teens.