The Fond du Lac Fire Chief is warning against any outdoor burning after a wildfire in the city of Fond du lac. Friday afternoon Fond du lac firefighters responded to the 600 block of Whispering Springs Drive for a reported field on fire. Upon arrival crews encountered a field fire which had already burned an acre of dry vegetation. Due to the remote location of the fire, the Fire Department’s Brush Response ATV was brought to the scene to help extinguish the fire. The fire was caused by a resident who was burning cardboard in a fire pit in the rear of his property. Hot embers extended to the dry vegetation and which stared the field on fire.