OSRS Underground Pass Guide: Requirements and Walkthrough

Overview

Underground Pass is Elf series part three: Experienced, Long, and built as a hostile dungeon rather than a dialogue tour. King Lathas sends you west of Ardougne to deal with the path toward Tyras.

Twenty-five Ranged (boostable) is the formal gate; the real gate is food, rope discipline and not taking the swamp's middle path. Iban's section ends with a staff reward that still sees niche use.

Complete this before Regicide. The pass becomes a commute later — learning it once with map markers saves every Tirannwn trip after.

Requirements and Prerequisites

Skill and quest gates below are taken from the OSRS Wiki quest-details block for this quest. Boostability notes follow the Wiki markers — if a level is unboostable, train it before you start.

Quest prerequisites (chains can be longer than this summary):

• Biohazard — verify chain on the Wiki
• Plague City — verify chain on the Wiki

If the Wiki lists alternate item unlocks instead of a skill (for example a gas mask instead of Slayer), either option is valid.

Items to Bring

Pack required items before the first travel segment. Recommended gear is comfort, not a hard gate, unless a fight forces a specific style.

Required

• Rope (2 recommended)
• Bow
• 1-5 arrows (only non-poisoned arrows with metal arrowtips will work. Craw's bow does not work. Crossbows and bolts will not work. Broad arrows, Ogre arrows, Ice arrows, and Training Arrows will also not work.)
• Spade
• Bucket (obtainable during quest)
• Tinderbox (obtainable during quest)

Recommended

• Plank (obtainable during quest)
• Combat 60
• Agility 50+ to reduce the risk of failing obstacles.
• Thieving 50 for a helpful shortcut.
• Weapon or combat spells. Using the bow is recommended if you need to save inventory space.
• Armour or Prayer 43 for Protect from Melee.
• Lots of food to survive traps and monsters. Taking a few Summer Pies is highly recommended if under 60 Agility, as eating these heals 22 in two bites and boosts your agility level by 5 per bite. Alternatively, Saradomin brews or super restores to reduce weight.
• Coins to buy food from Kamen (75 coins each time for food that heals a total of 28 hitpoints).
• Bones to peaches magic tablets (as there are weak mobs that can be killed for bones when you need food)
• West Ardougne Teleport to quickly access the Underground Pass (dungeon) entrance.
• Level 79 combat will make Blessed spiders non-aggressive, which saves some time while killing Kalrag.
• An explorer's ring and stamina or energy potions
• 2+ Agility potions if not taking summer pies (for players with a low Agility level).
• Telekinetic Grab runes for the Amulet of othanian
• Any instant teleportation method if you need to leave the dungeon

Ultimate Ironmen should split heavy deliveries across trips where the Wiki notes that is allowed.

Where to Start

Starting location: Talk to King Lathas on the of Ardougne Castle.

Use the travel method that fits your unlocks — games necklace, fairy rings, spirit trees, carpets, or spellbook teleports — and keep a teleport out for deaths during combat sections.

Quest List blurb (paraphrased intent): There are rumours of a secret passageway that can be used to get to the other side of the mountains west of Ardougne. Now it's just a matter of finding it.

Walkthrough, Stage by Stage

Numbered steps follow the Wiki quick-guide order, rewritten for BILS readers. Dialogue choices that gate progress are called out inline. For puzzle tiles or randomised layouts, use the dedicated puzzles section and the Wiki map if a step still feels unclear.

1. Starting out. Speak with King Lathas on the of Ardougne Castle. (dialogue: I am. What's our plan? → Yes.)
2. Speak with Koftik in the westernmost part of West Ardougne next to the cave. (dialogue: I'll take my chances.)
3. Bring the rest of your supplies now, as after this section there is no turning back unless you want to restart the entire dungeon.
4. Enter the cave and run south at the first junction.
5. Speak with Koftik for a cloth. Use it on an arrow, then use your tinderbox on it or use the arrow on the fire on the ground.
6. Go north to the gated area.
7. : If you dropped any items pick them up before you shoot the rope because you cannot pick them up afterwards, unless you pull the lever to go back across the bridge. If dropped close to the bridge they can be telegrabbed
8. Equip your bow and fire arrow (be sure to light the arrow with your tinderbox), then shoot the guide rope attached to the bridge.
9. Once across the bridge, take the plank in the north room (if you did not bring one).
10. Continue through the cave until you reach a section with water and a pit. Ignore the water, use a rope on the rock above the pit. If you fail, you will lose your rope.
11. Continue through the cave until you reach a large grid.
12. Walk across the grid and use trial and error to find your path. You will fall through some of the tiles. Some paths are not possible, see the full guide for solving this optimally.
13. : Keep your Hitpoints above 15 when crossing the grid.
14. Pull the lever next to the gate.}}
15. Orbs of light. You can now pray Rapid Heal for the duration of this step (there is an altar up ahead). Run west past the zombie camp, there will be five sets of odd markings along the walls of the corridor (You must attempt to disable the wall traps or walk past them).
16. Grab the plank by the furnace if you did not grab one earlier.
17. You will reach an altar, take the north path using the plank on the flat rocks.
18. Take the orb and walk back to the altar.
19. Take the north-west path with the ogres and blessed spiders. Take the orb.
20. Take the centre-most west path, traversing the flat rocks using the plank. Take the orb.
21. Continue through the remaining mid-quest objectives in order (see the OSRS Wiki quick guide for the exact mid-section checklist if you get stuck).
22. Wear Klank's gauntlets and search the cage circled on the map for Iban's dove. (It is applied to the doll automatically and will not go into the inventory).}}
23. Confronting Iban. Head south from where you obtain Iban's dove until you reach the broken bridge you used to get over, from there head east and then south to the Disciples of Iban.
24. Defeat a disciple of Iban in the middle of the maze and pick up his robes.
25. Equip the robes. (Following updates prior to the release of the Song of the Elves quest, you only need to equip the robes to enter the doors)
26. Do not drop anything that you are not willing to lose as using the doll on the well will teleport you to the entrance of the tunnels.
27. Enter Iban's temple, (Following updates prior to the release of the Song of the Elves quest Iban now has a chat dialogue) use this time to click one tile north of the well so that you can avoid any potential damage, right click use on the doll on the well, do not click investigate.
28. : Iban can deal a lot of damage quickly so be prepared.
29. Iban's spikes deal around 8 damage each and cannot be blocked with prayers. Running directly to the well should be fairly easy with one or two food items.
30. Use the Doll of Iban on the well in the centre of the room. You may have to do this a few times, as his attacks may interrupt you. When you do manage to get the doll into the well, Iban will be destroyed and the temple will begin to collapse.
31. Speak to Koftik to be transported back through the pass.
32. Head back to Ardougne Castle and speak with King Lathas.
33. Finish the closing dialogue — the quest is complete.

If a mid-quest fight sends you to your respawn, return with the same key items — several quests do not store progress for partially completed combat.

Puzzles and How They Work

Puzzle sections in modern quests are often randomised per account. The table below covers the puzzle types you should expect; exact tile solutions belong on the Wiki when they change per player.

Skip this section emotionally if the quest is combat-only — still skim for any mid-quest door puzzles.

Boss Fights

Combat encounters listed on the Wiki quest-details block. Death usually means a run-back with lost unprotected items outside safe instances — check each fight before you commit expensive gear.

Item-loss risk: standard death rules apply unless the quest instance is a safe minigame-style fight. Do not bring items you cannot afford to lose into dangerous multi-combat areas.

Rewards and Unlocks

Rewards below summarise the Wiki reward scroll. Experience amounts and unlock text can change with updates — re-check before you plan a grind around them.

What it opens up

• Agility 3,000 Agility experience
• Attack 3,000 Attack experience
• Iban's staff and use of the Iban Blast spell
• Klank's gauntlets

Fact checked 2026-08-04 against the OSRS Wiki quest page and quick guide.

Common Mistakes and Warnings

Underground Pass deaths are almost always route mistakes.

• Taking the middle swamp path and eating a long setback.
• Bringing one rope into a quest that wants backups.
• Dropping a still-needed dungeon item because inventory felt tight.
• Entering Iban under-fooded after spending supplies on early traps.
• Ignoring Agility boosts under 60 and failing obstacle tax repeatedly.
• Forgetting a bow plan when inventory space is scarce.

Ironman Notes

Summer pies heal and boost Agility — ideal under 60.

Map which dungeon items become drop-safe; re-acquiring after death is the iron tax.

Keep a teleport out once Iban is done so you never rewalk unfinished business unnecessarily.

FAQ

What is the main reward?

Progress through the elf series plus Iban's staff from the finale.

Is Ranged 25 boostable?

Yes.

How bad are the traps?

Bad enough that food is a primary tool, not an afterthought.

Do I need this for Regicide?

Yes — Regicide continues directly through the pass into Tirannwn.

Any pathing tip that saves the run?

North path around the early swamp — never the middle.

Related Guides

• OSRS Quests hub
• Optimal quest order
• Regicide Guide
• Mourning's End Part II Guide
• Song of the Elves Guide
• OSRS Agility Guide 1–99
• OSRS Quests Guide

Bottom Line

Pack rope, food and Agility boosts, then treat the dungeon like a route exam.

Elf-chain accounts should knock this out before Tirannwn fatigue sets in.