This challenge is part of Fortnite Season 3 Week 5 Challenges and you'll have to collect the four blue rings floating above Steamy Stacks.
This type of challenge has been a regular feature for the past two weeks, and this time it's the power plant chimneys that will have to be visited.
Map
The great specificity of this challenge is that all the levitating rings are at least 30 meters from the ground. There's no question of climbing anything to pick them up. Here, we'll just melt down on them with our glider.
The trick to picking all four of them up in one go is just to go through the draught at the heart of the chimneys. Jumping over the purple liquid in the ducts will take you into the air, where you can redeploy your glider and aim for a new ring.
Note that some of the rings are really high, even compared to the chimneys. When you reach the maximum height of the airstream, immediately deploy your glider to keep altitude as long as possible. If you aren't competing with opponents, you can also build a ramp to the rings, but this will cost you a lot of materials!
Original content by Romain "Zorg" Becquelin.