Eugene Springfield Fire responded to a brush fire at the top of Skinner Butte in Eugene early Tuesday morning.
Firefighters were called to the butte at 12:15 a.m. and contained the fire, estimated at half an acre.
It took two hours to fully extinguish hot spots. There were no injuries reported.
Witnesses said fireworks may have been the cause.
In a news release Tuesday, Eugene Parks officials said the area had recently been treated for fuels reduction by Parks and Open Space in partnership with the Eugene Rotary Club and Twin Rivers Charter School. "On June 24, grasses in the area were trimmed, a preventative measure that likely reduced the intensity of the fire. This timely action underscores the importance of ongoing maintenance and hazard reduction in preserving the safety of our natural areas," the press release said.
With the Fourth of July holiday approaching, the public is reminded fireworks are not allowed within Eugene city limits, including parks and natural areas.