
Borderlands 3 (BL3) has 30 Eridian Writing Slab Locations. Finding all Eridian Writing Collectibles unlocks the Tales From The Eridian Slab trophy or achievement.
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Borderlands 3 All Eridian Writing Slabs
None of these collectibles are missable! You can still get all of them after the story in free roam. Some require you to have done specific side missions as will be pointed out in the guide.
When you get close to an Eridian Slab it will be marked on the map via a blue icon. However, you won’t be able to read it until you unlock the ability near the end of the game (automatic from main story and unmissable). So beat the story first and collect them after.
The ones you found get a different icon on the map. You can also keep track by pressing L3 / Left Stick on the world map / in orbit / in zone map to view how many you found.
You also earn 25 Eridium per Slab, which is Borderland 3’s premium currency to buy skins and customization items from the Crazy Earl merchant in Sanctuary. 30 Slabs x 25 Eridium makes 750 Eridium earned in total.
The below guide is ordered by planets and zones. It is best used after the story. The story will bring you to all of these areas automatically. During the story some areas are not yet accessible but you wouldn’t be able to decipher the slabs anyway.
Trophy Bug Warning: The trophy often glitches and doesn’t unlock after the 30th writing. You can fix this by scanning the story-related Slab in Sanctuary, in Tannis’s infirmary again. Scan it a few times and the trophy should unlock. The tracking for it in orbit view is also known to be broken and shows 34/30 or 36/30 Eridian Slabs found even though there are only 30 total.
How to Read Eridian Writing in Borderlands 3

There are a lot of secrets hidden throughout the world of Borderlands 3, but one of the most intriguing is the Eridian slabs scattered throughout the different worlds. As you play the game you’ll quickly discover that these stone etchings are impossible to decipher. Just like the Eridian Crystals, you’ll need a specific upgrade to understand this writing and collect your reward. However, the Eridian Analyzer will not be available until you get to the end of the main campaign.
In order to read the Eridian Writing, you’ll need the Eridian Analyzer which is a mission reward given out after you defeat a story boss. This item is impossible to miss, so don’t worry about forgetting to pick it up. Once you have the analyzer you can go and scan any Eridian Writing slab throughout the world. Just walk up to these objects and hit the interact prompt that appears. You’ll then hear a unique lore entry and earn 25 Eridium for your trouble.
This is one of the best ways to earn a lot of Eridium so we strongly recommend scanning every single one before you jump into True Vault Hunter mode. Given how critical this resource is, you’ll need as much as possible for the end game. Remember, every location will only have one Eridium Writing challenge, so don’t expect to see a lot of them.
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