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.
Elden Ring: How To Use Great Runes
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. Before proceeding, players need to know that the way to the boss is littered with hidden walls and deadly traps.
The Sealed Tunnel 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.
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.
From there, advance south past the herd of Land Squirts in the watery area until the Sealed Tunnel entrance is visible.
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 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
Read more on gamerant.com