Lightless Arbor Dungeon Last Epoch
Image: Eleventh Hour Games

How to get Lightless Arbor Keys in Last Epoch

Welcome to the Lightless Arbor.

The Lightless Arbor is a popular dungeon in Last Epoch but can only be opened with the correct key. Here is how you can get Lightless Arbor Keys in Last Epoch.

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Where to find Lightless Arbor Keys in Last Epoch

Similar to other keys in Last Epoch, Lightless Arbor Keys can be found as random drops by defeating enemies. Besides that, players can also get Lightless Arbor Keys by defeating Monolith Timeline Bosses or playing through the Arena of Champions. The former has the highest drop rate, while the latter has the lowest.

What is the Lightless Arbor in Last Epoch?

The Lightless Arbor is a dungeon in Last Epoch that requires the keys mentioned to enter. The dungeon includes debuffs and buffs and is worth taking on as it offers the player valuable rewards and loot (more on that later). Additionally, players can expect to be put up against the challenging Mountain Beneath boss.

How to access the Lightless Arbor dungeon

Lightless Arbor Location In Last Epoch
Image: Eleventh Hour Games

Players can access the Lightless Arbor dungeon in the Ruined Era. From the start of the Surface Waypoint, head to the entrance north of the map that leads to the Shrouded Ridge. From the Shrouded Ridge, continue straight until you reach the doors of the Lightless Arbor dungeon. Once you arrive, interact with it and use the Light Arbor Key to enter.

Lightless Arbor rewards

Lightless Arbor Rewards Last Epoch
Image: Eleventh Hour Games

While inside the Lightless Arbor dungeon, players can spend gold on modifiers that can increase the value of rewards earned. The Mountain Beneath, the Lightless Arbor’s main boss, offers the most notable rewards of the dungeon. There are four different uniques the player can receive by defeating the boss, and the drops are completely random.

Here is what you can possibly receive after beating the Mountain Beneath:

  • Peak of the Mountain (tier 1 and higher)
  • Foot of the Mountain (tier 2 and higher)
  • Face of the Mountain (tier 3 and higher)
  • Core of the Mountain (tier 4)

As you can see, there are tiers within the Lightless Arbor; the higher the tier, the better the reward.

That sums up the Lightless Arbor dungeon in Last Epoch. To better prepare for this dungeon, check out our guide on Item rarities to understand how to make a better build.


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Christian Bognar
Christian is a contributing writer for PC Invasion and has been writing about the game industry for almost two years. He has found joy in a never-ending list of games, with some of his favorites being Elden Ring, The Last of Us, Final Fantasy, and Resident Evil. While he has a bachelor's degree in business, he decided to follow his dream and write about what he loves most. Outside of writing, you can find him listening to all types of podcasts, especially True Crime.