When navigating visually toward Schärding-Suben Airfield (LOLS), which major river serves as the primary prominent landmark for visual orientation?
Answer
Inn
Explanation
The keyed orientation feature is the **Inn**, a prominent river that is more readily identifiable than a small channel, border fence, or place name. **Key takeaway:** Prefer conspicuous, reliable landmarks for visual orientation. **Glossary:** Ground feature: visible terrain or human-made feature used as a navigation reference.