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The containment chamber

Threshold Institute · Site record

Name
The containment chamber

The containment chamber was the first thing the Institute built. Ilse Varga had it poured around the rift before anything else: concrete three metres thick, with one door that opened only from the anteroom, and two guards in the anteroom at all hours (T-001). The first rule was painted on its door: no one entered the rift, touched it or put any object into it without the written order of the Director (T-001).

Everything that came through in the first years came out here. The first stalker crossed the dark of the anteroom on the hundred and seventh night (T-002), and the response team fought the first brute in the anteroom for eleven minutes (T-003). The chamber was inspected every week, and in year 7 the inspection found the growth spreading over its floor from the foot of the rift. It was burnt back from then on and always came back (T-006). The old records room off the anteroom was the room that turned upside down (T-014).

From year 24 the surveys went through the rift from the chamber (T-017). In year 48 the widening carried the rift past the chamber's walls on its third day, and containment failed on all levels (T-055).

The files that name this place in their line on where the threshold was found:

File Found Where found
T-002 Rift stalker Year 1, month 4, day 17 The anteroom of the containment chamber, at night
T-003 Rift brute Year 2, month 9, day 3 The containment chamber and its anteroom
T-006 Growth Year 7, month 6, day 9 The floor of the containment chamber, at the foot of T-001
T-014 Upside-down room Year 20, month 7, day 13 The old records room off the chamber’s anteroom

The files whose containment procedures name this place, to hold a threshold here, to keep one away, or as a rule for the place:

File Class Found
T-001 The rift Class III Year 1, month 1, day 1
T-002 Rift stalker Class II Year 1, month 4, day 17
T-006 Growth Class II Year 7, month 6, day 9
T-041 Skeleton Key Class I Year 39, month 5, day 22

The last column says where in each file.

Part I: The tear

File Found Where named
T-005 Echo Year 5, month 11, day 28 Addendum T-005-B
T-007 Mirror Year 9, month 3, day 14 Addendum T-007-B

Part II: The rooms turn

File Found Where named
T-008 Dark room Year 11, month 5, day 6 Discovery
T-009 Gravity room Year 14, month 3, day 22 Discovery, Addendum T-009-A
T-013 Cold room Year 18, month 12, day 5 Addendum T-013-B
T-016 The watchers Year 23, month 4, day 27 Discovery

Part III: Going through (the places and creatures)

File Found Where named
T-017 Shifting land Year 24, month 3, day 9 Discovery
T-026 Trader Year 28, month 9, day 6 Addendum T-026-3

Part V: The widening

File Found Where named
T-055 Warden Year 48, month 2, day 9 Discovery

The journal names this place in:

Generated on 2026-11-13 from the game at commit b8361f1, rebuilt with every release (a release's name ends in its commit, e.g. build-…-b8361f1).

Every number on this wiki is read from the game's data files, and every icon is the game's own pixel art.

Credits: who made the game, and every creator whose sounds it uses.