This document covers Unit 2 of a training on topographic influences on wildland fire behavior. It discusses how topography affects fuels, fire spread, and barriers to fire spread. Specific topics include how elevation influences vegetation types; how slope, aspect, and drainages impact fire spread direction and rate; how ridges, canyons, and barriers interact with fire; and methods for determining slope in the field. The objectives are to understand topographic map features, and how topography influences fuels, fire behavior, and barriers.