You are playing Nightmare mode.

Locations with time counters on them cannot be discarded from play by player card effect.

A smoke as of fire and battle arose, and again the sun went down in a burning red that faded into a grey mist...
–The Fellowship of the Ring

Begin with the standard quest deck and encounter deck for THe Antlered Crown scenario.

Remove the following cards, in the specified quantities, from the standard encounter deck:

1x Dunland Prowler

1x Dunland Berserker

2x Dunlending Bandit

3x Raven Skirmisher

3x Raven War-camp

2x Driven Back

Then, shuffle the encounter cards in this Nightmare Deck into the remainder of the standard The Antlered Crown encounter deck.

Finally, flip this setup card over and place it next to the quest deck. Its effects remain active throughout the game, which is now ready to begin. Note: Dunlending Horde has the 'Dunlending Warriors' encounter set icon and should be shuffled into the Raven deck during setup.