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The Mountain That Fell
Horizon: Steel Frontiers

The Mountain That Fell

Follow our step-by-step guide to complete The Mountain That Fell quest in Horizon: Steel Frontiers, including finding collectibles and defeating enemies.

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Follow our step-by-step guide to complete The Mountain That Fell quest in Horizon: Steel Frontiers, including finding collectibles and defeating enemies.

Walkthrough
  1. 1
    Fast travel to Free Heap and take the road north. Keep right at the first split and follow the path along the river.
  2. 2
    At the second split, near the sign for Pitchcliff, keep left and follow the path until you cross a small bridge.
  3. 3
    Look to your right to find [TD-W60] This Sucks among rusted metal.
  4. 4
    Continue along the path to another split and keep right, heading north until you reach a T-junction at a rickety bridge.
  5. 5
    Head left across the bridge and look to your right to find [TD-W61] Phantom Limbs in rusted metal ruins.
  6. 6
    Cross back over the bridge and follow the path northwest until you reach a campfire at a rock face.
  7. 7
    Use the climbholds to climb up, then cross over the ruined fuselage.
  8. 8
    Climb up at the other end and continue climbing to a clearing with Stalkers and Red-Eye Watchers. Defeat them.
  9. 9
    Head to the north wall to find more climb holds and continue climbing to a second area with Glinthawks, Ravagers, and Red-Eye Watchers. Defeat these machines.
  10. 10
    Cross the river and head to the east rock wall to find more climb holds.
  11. 11
    Climb up to trigger a cutscene and a fight with a Stormbird. Defeat the Stormbird.
  12. 12
    Look westward to spot a Vantage at the western peak. Move right around the rocks to find climbholds and climb up to get Vantage Point - King's Peak.
  13. 13
    Drop down and use the rappel to return to the ground. Follow the path back to a crater for a cutscene.
  14. 14
    Move along the wooden scaffolding to find climbholds leading up to the GAIA Prime Bunker.
  15. 15
    In the bunker, after a cutscene with Sylens, activate the bioscan and continue through.
  16. 16
    Before heading down, go to the room at the end of the hall to get [AD50] GAIA Prime Arrival Log.
  17. 17
    Return to the hallway and climb down the elevator shaft.
  18. 18
    Follow the hallway out to the crater and use the rappel ahead to get down.
  19. 19
    Turn left and use the climbholds at the back to get up to another hallway.
  20. 20
    Follow it to the room at the end to find the last Power Cell on a shelf.
  21. 21
    Get back down to the platform and follow the ledge right to a collapsed hallway. Head down and zipline to a climb hold, then climb up.
  22. 22
    Continue up through the next door and climb the following elevator shaft.
  23. 23
    Head through the door to the next area and enter the room on the right to pick up [AD53] Log: Margo Shen.
  24. 24
    Head back out and follow the large hallway down through the door on the right. Grab [AD51] Log: Charles Ronson from the desk.
  25. 25
    Head through the opening to the left, follow the tunnel to stairs, then head up and through the hall to Elisabet Sobeck's quarters.
  26. 26
    Scan her journals on the desk to get [TD-Q40] Sobeck Journal, 11-19-64, [TD-Q41] Sobeck Journal, 7-16-65, [TD-Q42] Sobeck Journal, 10-31-65, [TD-Q43] Sobeck Journal, 1-15-66, and [TD-Q44] GAIA Log: 3 Feb 2065. This will also acquire [TD-Q45] Sobeck Journal, 11-19-64 R, [TD-Q46] Sobeck Journal, 7-16-65 R, [TD-Q47] Sobeck Journal, 10-31-65 R, and [TD-Q48] Sobeck Journal, 1-15-66 R.
  27. 27
    Climb up through the busted opening behind the desk and follow the tunnel to a large holo area.
  28. 28
    Interact with the terminal to get [HD21] Elisabet Sobeck Memorial.
  29. 29
    After the holo sequence, [AD52] Log: Charles Ronson, [AD54] Rest in Peace, and [AD57] Log: Travis Tate will appear on the table. Talk with Sylens.
  30. 30
    Return to where you entered this room and look left of the door to see a vent. Crawl through it and pry open the door.
  31. 31
    Pry open the next door ahead and get [AD59] Eleuthia Runtime Check.
  32. 32
    Return to the memorial room and head up the stairs at the back into the room ahead.
  33. 33
    Grab [AD58] Core Control Log off the desk to the right.
  34. 34
    Head out and around through the next door.
  35. 35
    Follow the hallway to another elevator shaft and grab [AD55] The Future.
  36. 36
    Climb up to the next area and continue back out to the crater.
  37. 37
    Follow the ledge right to another wall you can climb.
  38. 38
    Stop halfway up to grab [AD56] The Solution, then finish the climb and head into the Alpha Chamber.
  39. 39
    Use the holo terminal to get [HD22] Emergency Recording.
  40. 40
    After the holo sequence, speak with Sylens.
  41. 41
    Grab the Master Override from the round table.
  42. 42
    Exit the room and head back out to the crater. Continue down to the right and around to a zipline.
  43. 43
    Zip down to the rappel platform, climb up, and leave the rest of the way you came.
  44. 44
    Sylens will be waiting in his workshop. Speak with him to learn his history and receive his spear with the Master Override attached.
  45. 45
    Pick up [AD60] First Meeting.
Tips
  • When fighting the machines in the second climbing area, consider using the Ropecaster to tie down the Stormbird.
  • Getting one of the Ravagers on your side can be very helpful against the other machines.

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