What is the traveling edge of a wildland fire called?

The traveling edge of a wildland fire is referred to as the head of the fire. This area represents the front line where the fire is advancing, reaching out into unburned fuel. It is typically the most active part of the fire, where the flames are most intense and where fire spread occurs most rapidly due to available fuels, topography, and environmental conditions such as wind.

Understanding this terminology is crucial for firefighters, as the head of the fire is often the focus of suppression tactics, where resources are deployed to contain the fire's spread and protect property and natural resources. The other terms mentioned do not describe the advancing edge of the fire and may refer to different characteristics or areas of a wildland fire.