There are several secrets that you will discover as you play Destiny 2, and The Pale Heart is full of them, scattered throughout the interior of The Traveler. One of the secrets is the many Feathers of Light that you can find and pick up.
All 55 Feathers of Light in The Pale Heart – Complete Guide (Flock Together Triumph) [Destiny 2]
These Feathers of Light reflect the helpful bird that aided you during Destiny 2's The Final Shape campaign. You can find these feathers after you've completed the campaign and had a chance to explore the more open areas of The Pale Heart. There are multiples to track down, so you can try to find them in waves.
There are 55 Feathers of Light to find while exploring The Pale Heart. To make finding them easier, we're spreading the Feathers you find across the areas within The Pale Heart, starting with The Lost City. You'll need to collect all 55 Feathers to earn the Flock Together Triumph.
There are five Feathers of Light that you can find in The Lost City. Two are located close to the starting area, while the others are further away. You can find the third shortly after you leave the city, the fourth is under the arch before you reach the beach, and the last is at the end of a path on the right, when you reach the beach. You can find it on the rocks, tucked away on the side.