You are playing Nightmare mode.

Forced: When resolving the 'when revealed' effect on stage 2A or stage 3A, also discard cards from the top of the encounter deck until a location with the safe keyword is discarded. Attach that location to the newly revealed side quest, as a guarded objective.

"I reached here at last by a long hard road, up the Hoarwell and through the Ettenmoors, and down from the north. It took me nearly fourteen days from Weathertop, for I could not ride among the rocks of the troll–fells, and Shadowfax departed."
–Gandalf, The Fellowship of the Ring

Begin with the standard quest deck and encounter deck for the Across the Ettenmoors scenario.

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

1x Into the Ettenmoors

2x Shrouded Hills

3x No Rest

2x Arador's Bane

1x Troll-fells

2x Goblin Pursuer

2x Cold from Angmar

Then, shuffle the encounter cards in this Nightmare Deck into the remainder of the standard Across the Ettenmoors encounter deck.

Finally, flip this setup card over and place it next to the quest deck. Its effect remains active throughout the game, which is now ready to begin.