What to know
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Day 5 mission “It’s a Lung!” unlocks after prior days, requiring a photo at Originium Science Park’s Cliffside Trail.
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Key elements include the Cliffside Trail waterfall, at least one Lung operator like Chen Qianyu, 3+ operators, and Varied formation.
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Rewards feature Oroberyls, T-Creds, and progress toward the event’s portrait frame upon full completion.
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Event runs through February 24, 2026, emphasizing precise camera positioning over combat.
In Arknights: Endfield, you reach the climax of Carly’s storybook adventure on Day 5, transforming Valley-IV’s natural wonders into a fairy tale scene with your operators.
| Aspect | Details |
|---|---|
| Mission Name | It’s a Lung! |
| Location | Originium Science Park – Cliffside Trail, Valley-IV |
| Unlock Req. | Complete Days 1-4; Chapter I Process II |
| Photo Type | Group pose with landmark |
| Duration | Feb 7-24, 2026 |
Location
Head to Originium Science Park in Valley-IV, specifically the Cliffside Trail area, where a prominent waterfall serves as the must-include landmark for the photo—ensuring it’s clearly framed amid the lush canyon setting.
How to complete “It’s a Lung” photo
Access the event via the Events tab after prior days unlock it, then travel to the marked spot in Originium Science Park.
Step 1: Assemble your team
Before you go to the location, open the EditTeam menu.
You need a team of at least three members, and one must be of the Lung race (like Chen Qianyu).
Swap in a Lung operator if necessary.
Step 2: Navigate to the spot
Fast-travel or explore to Originium Science Park – Cliffside Trail in Valley-IV; the camera icon appears on the map once eligible.
Step 3: Enter camera mode
Interact with the event interface to activate the camera tool, reviewing targets: waterfall visible, 1+ Lung, 3+ operators, Varied group pose.
Step 4: Position operators
Set group pose to Varied formation—spread operators naturally facing outward or in a loose cluster; adjust spacing manually if validation fails due to geometry.
Step 5: Frame and capture
Angle the camera to prominently include the Cliffside Trail waterfall in the background, ensuring all operators and the landmark fit without cropping; snap once conditions greenlight.
Step 6: Claim and return
Rewards auto-claim upon success; return to Carly in Worker Dorms if this finishes the chain, advancing her storybook.
Day 5 rewards
- Orobery – x200
- T-Creds – x30K
- Mark of Perseverance – x2
- Arms INSP Set – x30
Nail this Lung photo to secure Day 5 rewards and push toward the full Carly’s Fairytale portrait frame, blending exploration and creativity in Endfield’s Valley-IV.
