Finishing Archaeology mysteries in Orthen is one of the best ways to turn skill progress into permanent account power. In this guide, you’ll learn how to complete the Mysterious City mystery in RuneScape 3: what prerequisites block it, where the door is, how to get and restore the required artefacts, and how to claim the reward at the mysterious monolith for more relic power (great for flexible PvM relic setups).

What the Mysterious City mystery unlocks

Mysterious City is an Orthen Dig Site mystery that ultimately rewards additional monolith power. More monolith power means you can run stronger combinations of relics without having to drop a key effect, which is especially helpful when you’re balancing damage, survivability, and quality-of-life relics for bossing.

It’s also a good example of why Archaeology can be expensive: artefact restoration materials, chronotes, and the time spent excavating can add up. Many players fund the process with skilling and PvM profits, and some simply top up their cash stack with RS3 gold when they want to speed up upgrades and supplies without putting progression on hold.

Prerequisites and common blockers

This mystery can be confusing because it looks “active” in the journal long before you can finish it. Before you commit time to excavating, make sure you meet the big requirements that commonly stop progress:

• High Archaeology level: later steps require access to deeper Orthen areas and high-level excavation hotspots (this is effectively an endgame Archaeology mystery).
• Access to Orthen (Anachronia): you must be able to reach the Orthen Dig Site and move between the city areas.
• Earlier Orthen progress: if your door interaction doesn’t behave as expected, you may need earlier Orthen mysteries completed (players often run into this if they’ve skipped around their journal).
• Restoration materials: you’ll need the correct materials to restore the required artefacts once you excavate them.

If your mystery log only says something like “I’m currently looking into it,” that’s normal. The journal doesn’t always provide the next actionable hint until you interact with the right object or complete the next placement step.

Step 1: Open the door with a restored Lingam stone

The first practical step is to open the sealed door leading into the city area by using a restored Lingam stone. Once restored, take it to the door and interact to unlock access.

• Excavate the Lingam stone at the appropriate Orthen hotspot.
• Restore the artefact at an Archaeology workbench using the required materials.
• Use the restored stone on the sealed door to unlock entry.

Tip: If you’ve already opened the door in the past, you may still be missing later steps. Opening the door is only the beginning of the mystery chain.

After the door is opened, the mystery progresses through city interactions and placements. If you can enter the area but your journal still doesn’t update, move on to the excavation and placement steps below; the journal often updates after you place the required items.

Step 3: Excavate the Raa idol and gold dish (southern debris)

To advance Mysterious City, you need two specific artefacts from Orthen city debris:

• Raa idol
• Gold dish

These come from an Orthen excavation hotspot commonly referred to as the southern debris within the city area. Be prepared for a slow grind: this spot can feel extremely AFK because artefacts may take a while to appear, even if you follow time sprites consistently.

• Bring porters (if you use them) and enough inventory space for soil and materials.
• Consider a soil box or screening plan if you prefer not to bank frequently.
• Expect duplicates; you may receive multiple idols before the dish (or vice versa).

Efficiency note: If you’re trying to finish the mystery quickly, plan your restoration materials in advance. Running out mid-session is one of the most common time-wasters.

Step 4: Restore both artefacts at a workbench

Once you have the artefacts, restore them at an Archaeology workbench:

• Restore the Raa idol.
• Restore the gold dish.

Because restoration can be material-heavy, this is where many players feel the pressure on their cash stack. It’s normal to budget for materials, chronotes, and gear upgrades while training. If you’re preparing for high-level PvM after this, having safe RS3 gold for late game gear, abilities, and upgrades can make the transition smoother by keeping your supply costs covered while you learn bosses.

Step 5: Place the gold dish at the temple pyramid

With the restored gold dish in your inventory, head to the temple pyramid in the city area and interact with it to place the dish.

• Go to the pyramid (often described as being south within the relevant Orthen city section).
• Interact with the pyramid while carrying the gold dish.

This placement is easy to miss because the object is large and visually distinctive, but the interaction prompt can be subtle depending on camera angle and clutter around the structure.

Next, take the restored Raa idol and interact with the correct building/structure in the city to place it. This is the second “physical placement” requirement for the mystery.

• Keep the Raa idol in your inventory.
• Interact with the designated city building/structure to install the idol.

If you’re unsure which structure is correct, double-check your mystery journal after placing the dish; the next objective usually clarifies once the game recognizes the first placement.

Step 7: Claim the reward at the mysterious monolith

After both placements are complete, return to the mysterious monolith (at the Archaeology campus) to finalize the mystery. Interact with it and manage relic powers as needed; the mystery completion should award an increase to your total monolith power.

Once you have the extra capacity, take a moment to review your relic loadout. Even if you haven’t unlocked many relics yet, this reward is future-proof: it becomes more valuable as you unlock stronger relics through additional mysteries and collections.

Recommended setup for finishing Mysterious City efficiently

Inventory and quality-of-life

• Porters (optional) to reduce banking friction while excavating.
• Soil management plan (soil box, screening later, or dump soil if you don’t need it).
• Restoration materials pre-stocked so you can restore immediately.

The excavation portion can be the longest part, especially if artefact RNG is unkind. Treat it like a long AFK session rather than a fast checklist. If you’re short on time, it can be worth prioritizing other Archaeology goals until you can commit to a longer excavation block.

Why this reward matters for PvM

Monolith power is one of those upgrades that doesn’t look flashy, but it changes how you build your account. More capacity lets you run more specialized relic combos, which can translate into smoother kills, fewer supply drains, and more consistent profit. That’s one reason RS3 bossing gold and Archaeology progression tend to feed into each other: better relic setups can make PvM more efficient, and PvM can fund faster skilling.

Frequently Asked Questions

Do I need a very high Archaeology level to finish Mysterious City?

Yes. While you can start parts of it earlier (like the door), the artefact excavation and city steps are tied to high-level Orthen content, so it’s commonly finished late in the skill.

Opening the door is only the first step. You still need to excavate and restore the Raa idol and gold dish, place them in the city, and then finalize the mystery at the monolith.

Where do the Raa idol and gold dish come from?

They’re excavated from an Orthen city hotspot often referred to as the southern debris. Artefact drops can be slow, so plan for a longer excavation session.

What do I do after placing the dish and idol?

Go back to the mysterious monolith and interact with it to complete the mystery and receive the additional monolith power reward.

Is it worth spending extra money to speed this up?

If you’re pushing endgame goals, it can be. Restoration materials, chronotes, and gear upgrades can be pricey; some players choose to maintain momentum with where to buy RS3 gold to speed up mid to late game progression in mind, while others simply grind it out through skilling and PvM.