This challenge is part of Fortnite Season 3 Week 3 Challenges and you'll have to land at the bottom of a Steamy Stacks engine while aboard a Choppa. Nothing too complicated on paper, although you'll have to get your hands on a helicopter and rush down the chimney without being attacked in the meantime.
On the map below, we show you where the nearest helicopter to Steamy Stacks is located, as well as the engines to enter.
Map
Entering through either of the chimneys is even easier than entering through the upper cavity of the Grotto. You'll have no trouble lowering your aircraft once it's hovering above the vent. To land exactly at the bottom on the purple liquid is a little trickier.
Manoeuvre gently and avoid bumping your aircraft, as the space is narrow and you risk bouncing off the walls and inflicting a lot of damage to the craft.
As the rate of choppa appearances has been reduced in Arena, it is better to complete this challenge in a normal game, to borrow a device without hindrance.
Original content by Romain "Zorg" Becquelin.