Here’s the location of the Ghost town where you’ll need to search a chest in for one of the Fortnitemares challenges.
The Fortnitemares 2019 event is now live in-game which includes the Storm King LTM, challenges and rewards. There’s challenges for the Battle Royale game mode as well as the Creative mode.
There’s a total of 6 challenges for the Fortnitemares challenges, and one of the challenges requires players to search a chest in different locations on the map. These locations have been redesigned for the Fortnitemares event, but were already on the map prior to the update.