This article covers how to get the worn key card in Arknights: Endfield. Including the location of the worn key card for Aburrey Quarry secret door and its use.
Aburrey Quarry Worn Key Card Overview
  Worn Key Card | Type | Mission Item |
| Price | 100 Valley Stock Bill | |
| A key. It might be used to open some abandoned area. | ||
How to Get the Worn Key Card
Access the Staff Lounge
Enter the Staff Lounge, located southeast of Aburrey Quarry, by activating the Electric Nexus to restore power and unlock the gate.
Talk to Lonnard to Buy the Worn Key Card
Head to the southeast corner of the Staff Lounge to locate Lonnard and purchase the Worn Key Card for 100 Valley Stock Bills.
How to Use Worn Key Card
The Worn Key Card is required to access the hidden gate at the Listening Post, located west of Aburrey Quarry, where you can obtain various loot and Aurylene.
Related Arknights: Endfield Articles
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