A Hysham wildfire that broke out Saturday afternoon has devoured 500 acres between Interstate 94 and the Yellowstone River southwest of town, according to Treasure County Sheriff Wayne Robison.
Robison said the fire was called in by a neighbor at around 1 p.m.
He said the county initially called the Department of Natural Resources and Conservation solely because it was in rough terrain. But soon high winds kicked the fire into overdrive.
The DNRC responded with a helicopter and a plane that dumped fire retardant.
Local ranchers, together with the Hysham Volunteer Fire Department, also responded to fight the blaze.
About 40 people responded.
At 10 p.m., Robison said the fire was contained.
He said they had to "do a lot of back-burning" to get the fire under control.
Robison said the cause of fire is still under investigation.
Robison said the trees in the area will likely "smolder for days."