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The Sealed Tunnel is a catacomb hidden in the Capital Outskirts near Leyndell, Royal Capital in Elden 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 also various useful items that’ll surely benefit players in their Elden Ring journey, 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 24, 2023, 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 end of 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

sealed tunnel location in elden ring

The Sealed Tunnel location in Elden Ring is southeast of the Outer Wall Phantom Tree Site of Lost Grace within the Capital Outskirts, Altus Plateau in Elden Ring. The catacomb’s entrance is ‌hidden between rocks, so players need to search thoroughly.

how to get to sealed tunnel in elden ring

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 in Elden Ring.

sealed tunnel hidden entrance in elden 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

first illusionary wall in sealed tunnel 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.

second illusionary wall in sealed tunnel in elden ring

Next, descend the small slope and roll southwest through the crates and barrels. Players will find a chest containing the Elden Ring Smithing-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.

abnormal stone clusters in sealed tunnel in elden ring

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.

fourth illusionary wall in sealed tunnel in elden ring

Advance southeast to what seems to be a dead-end, but it’s actually another illusionary wall. Be wary of the Abnormal Stone Clusters hiding 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.

onyx lord location in sealed tunnel in elden ring

Finally, proceed south to the large open door, which leads to the Onyx Lord boss' 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:

onyx lord plunge his sword in elden ring
onyx lord sending multiple meteorites in elden ring
  • The best method to dodge the attack is to create distance and avoid the incoming meteorites. Additionally, players can dodge the plunge attack and get behind the boss to hit him, but it requires precise timing.
onyx lord creating a meteorite in elden ring
  • Using his left hand, the Onyx Lord can swipe the nearest players with a gravity attack or send one meteorite to hit the farthest player. Simply dodging out of the way should do the trick. Additionally, rolling through the attack will also work.
onyx lord diagonal upward and downward slash in elden ring
  • The Onyx Lord can also use his long sword to slash upward or downward after moving diagonally. Tarnished need to roll to the right side when the boss moves left and vice versa.
  • Melee players will mostly suffer from the swipe and slash attacks, while Tarnished who use ranged weapons like Sorcery or Bows in Elden Ring likely have difficulty dodging the Meteorites attack.

Upon defeating the Elden Ring boss, players will get the Onyx Lord's Greatsword and 16,000 Runes.

divine Tower of West Altus location in elden ring

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 Ring is available now for PC, PlayStation 4 and 5, and Xbox One and Series X|S.

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