In Doom: The Dark Ages’ chapter 5, “The Holy City of Aratum,” there are two secret landing spots for the “Layover” challenge.
These secret landing spots offer secondary missions that can reward players with prizes like gold, skins for weapons, rubies, and upgrades.
The first secret landing spot is found in a small tower to the left once you complete the dragon flying tutorial in Chapter 5.
The second secret landing spot in Chapter 5 is located in the center of the city, at the lowest part, surrounded by three pillars and guarded by Titans.