Wildland TB 190 – Brush Tools and Handline Construction Practice Test

The cold flank is the part of the wildfire where activity is lower, making it safer to work. The head is the most active, fast-moving edge, and the flanks are the sides; on the cold flank the fire burns more slowly and with less intensity, which lets crews conduct lower-activity tasks like building or reinforcing lines, anchoring control efforts, or staging equipment with reduced risk. It isn’t the hottest area, nor where water drops are typically first directed, since those actions target the most active spots to slow the fire.