Firebreak

Red fire retardant dispersed aerially onto brush adjoining a firebreak during the Tumbleweed Fire in California, in July 2021; while vegetation to the left of the firebreak has completely burned, everything to its right was protected
A firebreak on the Setúbal Peninsula in Portugal

A firebreak or fireline (also called a doubletrack, fuel break, fireroad and firetrail in Australia) is a nonflammable gap in vegetation or other combustible material that acts as a barrier to slow or stop the progress of a bushfire or wildfire. A firebreak may occur naturally where there is an absence of vegetation or "fuel", such as a river, lake or canyon. Firebreaks may also be man-made, and many of these also serve as roads, such as logging roads, four-wheel drive trails, secondary roads, or highways.

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