fascine

thumb|right|Templin Channel in Templin, Germany. The riverbank was strengthened with fascines.

A fascine (pronounced ) is a rough bundle of brushwood or other material used for strengthening an earthen structure, or making a path across uneven or wet terrain. Typical uses are protecting the banks of streams from erosion (a fascine mattress), covering marshland, or providing ground improvement in a manner similar to that of modern geotextiles.