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The Missing Expedition

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Ruins of Threnal adpack icon.jpg
DDO Point icon.png Requires access to adventure packIcon tooltip.png: Ruins of Threnal
The Missing Expedition
Heroic level: 9
Epic level: None
Duration: Medium
Heroic XP:  ♣1,703Icon tooltip.pngSolo/Casual ♦3,020Icon tooltip.pngNormal ♥3,171Icon tooltip.pngHard ♠3,322Icon tooltip.pngElite
Epic XP: N/A
Takes place in: The Southern Ruins
Bestowed by: Zaveera Halfspear
NPC contact: Zaveera Halfspear
Quest acquired in: Ruins of Threnal
Patron: House Phiarlan
Base favor: 4
Free to Play: No
Extreme Challenge: No
M missing expedition.png
Loading screen


The Missing Expedition is the 1st quest in the 3rd chain,The Abandoned Excavation, in the Ruins of Threnal story arcIcon tooltip.pngStory arcs are chains of quests that make up a story line.
Completing all the quests in a story arc often yields a nice reward.
The Western Excavation In Need of Supplies • The Rescue • Secure the Area
The Eastern Excavation The Library of Threnal • Escort the Expedition • Hold for Reinforcements
The Abandoned Excavation The Missing Expedition • Entering the Gate Chamber • The Gate Chamber

Spoiler Warning: Information below this point can be considered spoiler material!


  • Find the missing Deneith party
  • Pick up the Scroll of the Black Moon
  • Slay the Cave Beholder
  • Gain access to the ruins
  • Access the locked room

What to Expect

  • Traps (fixed)
  • Overlapping map
  • Collapsible floor

Known Traps

Trap DCs

  • Floor spikes near the first drop-down
  • Two flame jets covering two grates just past the first locked door

Tips and Misc

  • Knock/Open lock speed up the quest but not required. There are two locked doors which must be opened to proceed. The silver key to the first door will be in a chest which is randomly placed somewhere in the dungeon - if you're lucky you will find it along the way to the end. If not check the map for other possible locations (see below). The 2nd one (the jeweled key) can be found in a chest just past the secret door, guarded by ice flensers. Neither are required if you can knock or lock-pick the doors.
  • Note this quest has been modified over the years, and no longer features any shrines, loot, or optionals, so try to be efficient and stick to the main path as it can be quite long if you get lost.
    • The main path is as follows:
      • Go right (south) at the start.
      • When you get to the first (four-way) intersection go straight (South) then at the second four-way turn right you reach the mandatory Beholder (see next).
      • From there, keep going east ("right" on the map); go south when you can, jump down when you can.
    • If looking for the key(s), know that the northwest tunnels (everything north and west of the 4-way intersection (above the long dead-end) on the map) form a loop, doubling over/under each other just south of the start. When you get to a blind crossing on the map, look up - if you see something that looks like "reinforcements" on the roof above you, that shows that a different tunnel passes over you there. Either path that leads east of that intersection advances to the quest via the south path from the T-intersection.
  • The cave beholder must be slain to complete this quest (but not the next one, which uses the same map). Bring deathward/deathblock items.
    • Be sure to kill it at the start as it will be a long run back from the end if you forgot to do so. It can be found in the long dead-end extending south from the cavern tunnels. (Just turn right at the start, head south, and then keep south at the 4-way intersection, easy.)
  • In the room with the collapsing floor and the seven "bait" chests, the chests are NOT real, so you don't have to waste a lot of time and jumping to try and get to them. (It IS possible by jumping onto the ledges on either side of the room, but it is pointless). You do have to drop down to continue, so don't worry if you fall.

Bonus XP

  • Aggression bonus: 56 or more monsters killed +10% Bonus.( ♣170 ♦302 ♥317 ♠332 )
  • Onslaught bonus: 73 or more monsters killed +15% Bonus.( ♣255 ♦453 ♥476 ♠498 )
  • Tamper bonus: 3 or more traps disarmed +10% Bonus.( ♣170 ♦302 ♥317 ♠332 )
  • Observance bonus: 1 or more secret door discovered +8% Bonus.( ♣136 ♦242 ♥254 ♠266 )


  • Chests: None containing loot. Two containing keys that will be required to proceed if you do not have knock or open lock.
  • NPC rewards:


Name(picture) CR Type Race
Baby Glass Spider(view)
Baby Glass Spider.jpg
 ♦1Icon tooltip.pngNormal ♥2Icon tooltip.pngHard ♠5Icon tooltip.pngElite OR From Egg: ♦1Icon tooltip.pngNormal ♥1Icon tooltip.pngHard ♠1Icon tooltip.pngElite; Vermin Spider
 ♦14Icon tooltip.pngNormal ♥16Icon tooltip.pngHard ♠19Icon tooltip.pngElite ♦20Icon tooltip.pngEpic Normal ♠66Icon tooltip.pngEpic Elite Aberration Beholder
Black Pudding(view)
Black Pudding.jpg
 ♦7Icon tooltip.pngNormal ♥9Icon tooltip.pngHard ♠11Icon tooltip.pngElite Ooze Black Pudding
Flesh Render(view)
Flesh Render.png
 ♦12/14Icon tooltip.pngNormal ♥14Icon tooltip.pngHard ♠17Icon tooltip.pngElite Evil Outsider Demon
Glass Spider Queen(view)
Glass Spider Queen.jpg
 ♦8Icon tooltip.pngNormal ♥10Icon tooltip.pngHard ♠14Icon tooltip.pngElite Vermin Spider
Granite Gargoyle(view)
Granite Gargoyle.jpeg
 ♦8Icon tooltip.pngNormal ♥10Icon tooltip.pngHard ♠13Icon tooltip.pngElite ♦22Icon tooltip.pngEpic Normal Monstrous Humanoid Gargoyle
Ice Flenser(view)
Ice Flenser.png
 ♦14Icon tooltip.pngNormal ♥16Icon tooltip.pngHard ♠19Icon tooltip.pngElite Evil Outsider Demon
Large Earth Elemental(view)
Large Earth Elemental.jpeg
 ♦5Icon tooltip.pngNormal ♥7Icon tooltip.pngHard ♠9Icon tooltip.pngElite Elemental Earth Elemental
Mephit of Fernia(view)
Mephit of Fernia.jpg
 ♦9Icon tooltip.pngNormal ♥11Icon tooltip.pngHard ♠14Icon tooltip.pngElite Fire Outsider Mephit
Rust Monster(view)
Rust Monster.jpg
 ♦3Icon tooltip.pngNormal ♥5Icon tooltip.pngHard ♠7Icon tooltip.pngElite Aberration Rust Monster
Thaarak Hound(view)
Thaarak Hound.jpg
 ♦10Icon tooltip.pngNormal ♥12Icon tooltip.pngHard ♠15Icon tooltip.pngElite ♦21Icon tooltip.pngEpic Normal ♠44Icon tooltip.pngEpic Elite Evil Outsider Hellhound