The Sealed Tunnel is a catacomb hidden in the Capital Outskirts near Leyndell, Royal Capital inElden Ring. Completing the Sealed Tunnel is crucial if players wish to unlock the Divine Tower of West Altus and get the Great Rune of a Shardbearer.
Other than acquiring a Great Rune, there are alsovarious useful items that’ll surely benefit players in theirElden Ringjourney, like the Smithing-Stone Miner’s Bell Bearing (2), Onyx Lord’s Greatsword, and more. Naturally, players need to fight numerous enemies to progress through the Sealed Tunnel, and some of them are pretty annoying.

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Updated on June 19, 2025, by Nahda Nabiilah:The Sealed Tunnel is one of the numerous caves players will encounter while exploring the Lands Between in Elden Ring. Similar to others, it’s possible to find valuable items, annoying enemies,as well as a boss waiting at the endof the Sealed Tunnel in Elden Ring. Defeating the boss is a crucial step, as it doesn’t only reward Runes and other items, but Tarnished will also unlock a path to the Divine Tower that once belonged to Rykard, Lord of Blasphemy. Players should advance carefully inside the Elden Ring Sealed Tunnel since it’s full of illusionary walls and traps.

How To Get To Sealed Tunnel In Elden Ring
The Sealed Tunnel location inElden Ringis southeast of the Outer Wall Phantom Tree Site of Lost Grace within the Capital Outskirts, Altus Plateau inElden Ring. The catacomb’s entrance is hidden between rocks, so players need to search thoroughly.
To reach it, travel to the Outer Wall Phantom Tree bonfire and head east in the open field until players are standing on a cliff.Head down the destroyed slope to arrive at a moat inElden Ring.

From there, advance south past the herd of Land Squirts in the watery area until the Sealed Tunnel entrance is visible.
Sealed Tunnel Walkthrough In Elden Ring
After passing through the long hallway and activating the Site of Lost Grace, turn west and roll through the illusionary wall to open a new area.
Next, descend the small slope and roll southwest through the crates and barrels. Players will finda chest containing theElden RingSmithing-Stone Miner’s Bell Bearing (2). Behind the chest, Tarnished can swing against another hidden wall.

Use the elevator to go down and attack the third illusionary wall between the tree roots. Now, players should be in a large area filled with large branches and Vulgar Militiamen enemies. Carefully drop from one branch to another until reaching the platform across the room. Try not to fall down, as there’s an Abductor Virgin waiting to ambush.
Inside the next room, players will find some overgrown branches blocking their path down the stairs. The only way to proceed is by falling down through the opening on the right side of the wooden platform. Be careful of the explosive Abnormal Stone Clusters enemies, as they can be lethal.

Advance southeast to what seems to be a dead-end, but it’s actually another illusionary wall.Be wary of the Abnormal Stone Clustershiding between the crates.
Like the area before, the following room is filled with large tree branches that players need to drop onto carefully until reaching the ground below.

Finally, proceed south to the large open door, which leads to theOnyx Lordboss' room.
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Although it may appear as an easy boss, the Onyx Lord might be tricky thanks to the constant use of Gravitational Magic. Therefore, here are a couple of tips and tricks to easily defeat him:
Upondefeating theElden Ringboss, players will get theOnyx Lord’s Greatswordand 16,000 Runes.

Additionally, the path to the Divine Tower of West Altus will also become available. However, the tower can only be accessed once Rykard, Lord of Blasphemy, is defeated.
Elden Ringis available now for PC, PlayStation 4 and 5, and Xbox One and Series X|S.

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