In this episode, Matt Hartsky breaks down why south-facing slopes are absolute gold for December mule deer, especially if your goal is finding mature bucks after the rut. Once November ends and bucks peel away from the does, everything in their world becomes about conserving and rebuilding energy. The mountains get colder, snow piles up, and winter forces mule deer into terrain that keeps them alive with the least amount of effort. No slope type delivers more consistent food, warmth, and predictable thermals in early winter than a good south face. Matt explains how sunlight transforms these slopes into reliable late-season deer habitat. South exposure keeps snow shallower, melts crust faster, exposes bitterbrush and sage earlier, and stabilizes thermals throughout the day—giving bucks a safer, more predictable place to bed and feed. You’ll learn why bucks shift into tight survival patterns in December, how they use benches, timber edges, contour lines, rock pockets, and micro-shadows, and how to identify the exact pockets where older age-class deer bed and feed with minimal movement. Matt also breaks down how snow cycles, storms, crust events, and temperature swings reshape daily use on these faces, and why timing your hunt around weather patterns dramatically increases your odds. You’ll hear how to glass these slopes correctly, how to approach without blowing the basin, and the most common mistakes hunters make when they step into this terrain. If you want a clear system for consistently finding late-season mule deer, south slopes are the blueprint—and this episode shows you exactly how to hunt them.