Encounter set:
Journey Down the Anduin
Riverland.
Forced:
If Banks of the Anduin leaves play, return it to the top of the encounter deck instead of placing it in the discard pile.
here and there through openings Frodo could catch sudden glimpses of rolling meads, and far beyond them hills in the sunset, and away on the edge of sight a dark line, where marched the southernmost ranks of the Misty Mountains. - The Fellowship of the Ring