Crews with Aurora Fire and Rescue and several other agencies put out a 40 acre brush fire at 56th Avenue and E-470.
No structures were threatened and there was smoke in the area that caused some visibility issues for drivers.
The fire was reported just after 3 p.m. Its cause is still under investigation.
Shortly after this fire was reported, crews were dispatched to another one at I-70 and E-470. That fire was quickly extinguished and those crews are now assisting with the fire at 56th Ave.