Snowdrifts
The Road Darkens#36 (x2)
Treachery
When Revealed: Attach to the active location. (Countss as a Condition attachment with the text, "Limit 1 per location. No more than 3 progress can be placed on attached location each round.") If Snowdrifts is not attached to the active location, it gains surge.

Soon even Boromir found it hard to keep going. -The Fellowship of the Ring