Spoiling the mole's sabotage attempt is one of legendary quests for Week 14 in Fortnite Chapter 2 Season 7.
To reach this challenge you must first collect instructions by talking to Slone using a payphone, warn any three characters of impending doom, place warning signs and shut down power for two radar dishes.
Completing this challenge will reward you with 30k XP, which will help you collect those last Battle Stars for the Season 7 Battle Pass and unlock the last legendary quest of the season - confront the mole.
Note this particular challenge is no longer able to be completed. What's new? Chapter 4 Season 2 has arrived! New additions include the Grind Rails and Kinetic Blades, along with the new Battle Pass, character collection and Eren Jaeger skin. It's a good idea to know how to get XP fast in Fortnite.
How to spoil the mole's sabotage attempt in Fortnite explained
To spoil the mole's sabotage attempt for this Fortnite legendary quest you need to head to Corny Complex, which has become rather floaty.
For this reason, you need to ensure you land on the reminder of the IO base, which is beneath the western grey barn. Don't worry if you miss the landing - you can easily gather enough materials in the surrounding area to build a set of stairs up to this ledge.
Once you're safely on the ledge, you'll find the countermeasure attached to part of the wall. Now all you have to do is interact with it to complete the challenge!