Dungeons:Lone Fortress

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 "title": "<span class=\"sprite-file\" style=\"height:20px;width:20px;--vertical-align:middle\">[[File:DungeonsMiscellaneousSprite Boss Mission.png|20x20px|link=|alt=DungeonsMiscellaneousSprite Boss Mission.png: Sprite image for Boss Mission in Minecraft|class=pixel-image|]]</span> Lone Fortress",
 "images": [
 "Lone Fortress.png"
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 "field": "\n* <span class=\"nowrap\"><span class=\"sprite-file\" style=\"--vertical-align:middle\">(link to File:DungeonsLevelSprite Island Realms.png article, displayed as 16x16px|link=MCD:Island Realms|alt=|class=pixel-image|)</span>(link to MCD:Island Realms article, displayed as <span class=\"sprite-text\">Island Realms</span>)</span>",
 "label": "Part of"
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 {
 "field": "<span class=\"nowrap\"><span class=\"sprite-file\" style=\"\">(link to File:DungeonsEntitySprite wretched-wraith.png article, displayed as 16x16px|link=MCD:Wretched Wraith|alt=|class=pixel-image|)</span>(link to MCD:Wretched Wraith article, displayed as <span class=\"sprite-text\">Wretched Wraith</span>)</span>",
 "label": "Boss"
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 {
 "field": "IV",
 "label": "Minimum difficulty"
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 {
 "field": "<span class=\"nowrap\"><span class=\"sprite-file\" style=\"--vertical-align:middle\">(link to File:DungeonsLevelSprite Frosted Fjord.png article, displayed as 16x16px|link=MCD:Frosted Fjord|alt=|class=pixel-image|)</span>(link to MCD:Frosted Fjord article, displayed as <span class=\"sprite-text\">Frosted Fjord</span>)</span>",
 "label": "Unlock predecessor"
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 {
 "field": "Usually has all six captains but not always",
 "label": "(link to MCD:Raid Captain article, displayed as Raid captains)"
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 "field": "Can have daily trials",
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 "invimages": [],
 "footer": "<div style=\"text-align: left;\">\n<p style=\"margin-bottom:0.5em\">'''Cold and Alone'''</p>An isolated fortress seems to be the source of the never-ending winter. Worst of all, from somewhere deep within those lonely ramparts, [[MCD:Wretched Wraith|something terrible]] screams out with rage and fury. We have to push forward through snow-covered hallways and collapsing towers to reach the heart of the storm.\n</div>"
}

Lone Fortress is the fifth island realms mission in Minecraft Dungeons, and is part of the Creeping Winter DLC. It is unlocked after the completion of Frosted Fjord, and completing Lone Fortress does not unlock any missions. Lone Fortress is counted as a boss mission for Apocalypse Plus progression, due to it containing the Wretched Wraith.

Lone Fortress is a large frostbitten castle located north of Frosted Fjord. It is composed of long hallways, open outdoor sections, and thin paths set atop the battlements of the fortress. It features decorated blue carpet, statues of enchanters and horses, torches, wooden catapults, lilypads, blue stained glass windows, frozen water pools and waterfalls, bookcases, chandeliers, and paintings of the Arch-Illager with "weak" and "foe" graffitied on them. Upon entering the first indoor portion of the mission, a blue locked gateway can be found up a set of stairs that must be unlocked using a diamond key golem located on one of the long paths to the sides. The diamond key golem can either be in an area with a chasm filled with skeletons perched on stone pillars, or it can instead be in an elevated library locked behind several gates lowered by activating buttons and defeating ambushes. After opening the blue locked gateway, a tall spiral staircase must be climbed to reach a ruined bridge that has become completely frozen by the extreme cold. Near the end of the mission, two locked gateways, one blue and one yellow, can be found in an open indoor area of the fortress. By navigating around the center section to the west side and following the path down, the center section containing a diamond key golem can be reached. Upon defeating an ambush, the heroes can escape the center section and return the diamond key golem to the blue locked gate, granting access to several emerald urns and creating a pathway to the gold key golem. Upon opening the yellow locked gate using the gold key golem, the frozen arena containing the Wretched Wraith, along with statues of royal guards on the walls, can be reached. Upon defeating the Wretched Wraith, the gate to the north-east will be lowered, granting access to an elevated area with a toppled blue throne, green torches, and statues depicting a hero defeating a dragon. It is here that the exit of the fortress can be found which, if entered, ends the mission.

Explore The Fortress

1. Find The Source
2. Find The Diamond Key
3. Find The Source

Enter The Grand Chamber

1. Get The Gold Key
2. Stop The Winter

Escape the Fortress

1. Find the Exit

• In the game files, Lone Fortress is referred to internally by the name LonelyFortress.

• Bailey, an optional sub dungeon that generates in Lone Fortress, is the only location in the game where horses can be found.
• A statue of a chicken jockey, creeper, mage, enderman, and the Nameless One can be found in a sidepath ambush room in this mission. These statues are referred to as chess pieces in the game files, and are called the Knight, Rook, Bishop, Queen, and King respectively.

• 👁 The bishop chess piece of a mage.
  
  The bishop chess piece of a mage.
• 👁 The king chess piece of the Nameless One.
  
  The king chess piece of the Nameless One.
• 👁 The knight chess piece of a chicken jockey.
  
  The knight chess piece of a chicken jockey.
• 👁 The queen chess piece of an enderman.
  
  The queen chess piece of an enderman.
• 👁 The rook chess piece of a creeper.
  
  The rook chess piece of a creeper.

• 👁 A screen-cap of Lone Fortress from a Minecraft Dungeons Diaries video on the Creeping Winter DLC.
  
  A screen-cap of Lone Fortress from a Minecraft Dungeons Diaries video on the Creeping Winter DLC.
• 👁 Royal guards found within Lone Fortress.
  
  Royal guards found within Lone Fortress.
• 👁 Graffti on a painting of the Arch-Illager found in Royal Hallway that translates to "foe".
  
  Graffti on a painting of the Arch-Illager found in Royal Hallway that translates to "foe".
• 👁 Another vandalized painting of the Arch-Illager in Royal Hallway that translates to "weak".
  
  Another vandalized painting of the Arch-Illager in Royal Hallway that translates to "weak".