Climbing "Route 4" (graded 5-) on the Knorrennadel West-Wand is a classic experience. The route, despite its modest grade, offers engaging climbing on solid granite. Expect enjoyable face climbing with well-placed holds and good friction. While not particularly long, it provides enough exposure to keep things interesting, especially on the upper sections. The crux, though minimal, might involve a slightly steeper section or a more delicate traverse requiring precise footwork. Proper gear placement opportunities are ample, allowing for a comfortable and secure ascent. Overall, "Route 4" is a great introduction to alpine rock climbing and a satisfying warm-up for tackling more challenging routes on the West-Wand.