Halfway down, something shifts. The road straightens for a quarter-mile, and you see the valley floor far below—the checkerboard of dormant fields, the silver thread of a creek not yet frozen, the single white church steeple of the town that calls itself Ashby but is really just a post office and a general store with a gas pump that takes cash only.
The "Descending" part of the guide implies going deep into the mission (long rotations). The Ash parts drop from Rotation C (Wave 20 minutes in Survival). You are looking for the (commonly the hardest part to get due to RNG). ashby winter descending best