From SCP: Secret Laboratory English Official Wiki
Subsection-03 of Site-02, also known as the Light Containment and Testing Zone, or simply Light Containment Zone, is one of four zones found in SCP: Secret Laboratory. The zone is also called Grayhall by the staff of Site-02.
Operational Guide Overview
The Light Containment and Testing Zone, colloquially known by Site Staff as the ‘Grayhall’, houses multiple testing facilities and containment cells for a number of Euclid and Safe-Anomalous objects. The Zone houses the majority of the D-Class stocks contained within numerous individual confinement cells and personnel offices. Medical testing, screening, and Site operations are also conducted here on both staff and D-Class Personnel.
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“Fifteen, Twenty-two, Forty-five, Six-dash-three…hell, even Area Fourteen. More and more hits are happening and we sit here doing nothing. For what, exactly? So we know why 096 screams the way it does? So we understand why 173 shits? Shouldn't we be using what we know to fight back? To develop some kind of weapon that works? ... I wonder what the O5 think.”
-Charles H. Goodwin, Analyst, Site-02
Description
Light Containment Zone (LCZ) is one of the four zones in Site-02.
It is the spawn location of Class-Ds, Scientists, and SCP-173, as well as being the location of SCP-914 and SCP-330.
Light Containment Zone is also the only zone that is affected by the Decontamination Process, a process which kills anything within the zone 11 minutes and 45 seconds after the round has started. This forces players to move down to Heavy Containment Zone, and prevents players from camping and stalling a round.
There are a few important rooms that contain supplies for players to aid their journey through the Heavy Containment Zone. A helpful navigation aid is the signs above doors, which primarily informs players of the type of room that lies beyond. Certain rooms will have fixed designations (see next section), whilst others will be pseudo-random.
Despite popular belief, Light Containment Zone is above Heavy Containment Zone and not below it.
Related article: Soundtrack
Room ID Codes
Unique to Light Containment Zone are "Room ID Codes" that reperesent what room is behind a door. These symbols are found above every door in LCZ and allow players to easily identify what room is behind the door.
| Icon | Description |
|---|---|
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Straight Hallway; the number is unique to each Straight Hallway. |
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Corner Hallway; the number is unique to each Corner Hallway. |
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3-Way Intersection; the number is unique to each 3-Way Intersection. |
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4-Way Intersection; the number is unique to each 4-Way Intersection. |
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Class-D Cells (End Room) |
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Testing Chamber 01 (End Room) |
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Airlock Hallway, the number is unique to each Airlock. |
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Garden Chamber/Greenhouse (Hallway) |
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LCZ Armory (End Room) |
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Water Closet (Hallway) |
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SCP-173's Containment Chamber (End Room) |
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SCP-914's Containment Chamber (End Room) |
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Office (End Room) |
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LCZ/HCZ Checkpoint (End Room); Code will be displayed as EX-B for Elevator Systems B. |
| Icon | Description |
|---|---|
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SCP-012's Containment Chamber (End Room); removed along side SCP-012's room in v11.1.0. SCP-012's chamber was removed due to being a CB Asset and got replaced with TC01. |
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SCP-330's Containment Chamber (End Room); replaced the #012 ID Texture for the Halloween 2020 Event. The room was still that of SCP-012's chamber. |
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Giant Ventilation Room (Hallway); replaced with VT00 when the Greenhouse replaced the room in v7.0.0. The Giant Ventilation room was removed due to being a CB Asset. |
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Placeholder symbol; added in v4.0.0 and removed in v6.0.0. The Room ID was always LC2 and had no meaning. |
Unique Rooms
Unique rooms are rooms that spawn only once (with the exception of airlocks and the checkpoints), and can contain valuable items, or can be used as hiding spots. These rooms have fixed designations:
Class-D Cells - CD01
The Class-D Cells are the spawn location of all Class-Ds. The room is a long hallway with multiple cell doors that run along the central walls of the room.
Behind each cell door is a small room containing a small single bed and a table. 1-3 Class-Ds will randomly spawn among these small cells.
No items will spawn here, and the room has no importance besides being the spawn location of Class-Ds.
The back of this room contains two pieces of artwork made by winners of an art contest for SCP:SL. These artworks do not appear when the Halloween and Xmas props are spawned in.
Water Closet - WC00
The Water Closet is a hallway that contains a male and female bathroom (which can contain loot). This is also a Scientist spawn location.
The Water Closet contains 3 toilets and 2 sinks in both the male and female restrooms.
In the male and female bathrooms, there is the possibility of finding up to two keycards and/or the COM-15.
A First Aid Cabinet will sometimes spawn outside the bathroom door along the wall.
The bathrooms can be used as a hiding place from SCPs, but may not be as effective against humans who may be checking the room for loot.
Possible Spawns:
- Outside the Toilets:
- Men's Toilets:
- Women's Toilets:
Garden Chamber - VT00
The Garden Chamber, also known as the Greenhouse Room, contains a greenhouse area with several plants sectioned off from the playable area with large glass windows. The room acts as a straight hallway variant.
Players can access the plants by smashing the window, although the plants cannot be interacted with. It is possible for a Janitor Keycard or Scientist Keycard to spawn on the ground nearby these plants, or even a Bulletproof Locker №7.
On the wall opposite the plants is a door that leads to a small room which either has a First Aid Cabinet, a Standard Locker, a Bulletproof Locker №7, a Workstation or nothing.
The room acts as one of the possible spawn points as a Scientist.
Interestingly, the room's code, 'VT00', does not match with the room name. Both Greenhouse and Garden Chamber have officially been used when referring to this room.
Possible Spawns
- In the side room:
- Behind the glass:
Office - PC15
The Office is a medium sized room that has an orderly arrangement of desks with computer monitors, phones, and other utensils.
A single Scientist Keycard always spawn in this room on a random desk.
Left to the entrance of the room, along the same wall is a possible spawn location for a Standard Locker.
The right wall of the spawn has two possible spawn locations for First Aid Cabinets.
Guaranteed Spawns:
- On a random desk:
Possible Spawns:
- Standard Locker
- First Aid Cabinet (up to two)
Glass Room - GR18
The Glass Room also known as GR18 is a medium sized testing chamber found in Light Containment Zone, that contains a large glass chamber and several shelves. Despite the entrance of the room being a gate, it does not require a Keycard to open. Inside the room is a large chamber with breakable glass. A COM-15 will sometimes spawn inside the chamber. The right wall of the room has a chance for a First Aid Cabinet, Standard Locker, or Workstation to spawn. Further along this wall is a shelf that may contain a Keycard. There is also a small chance for the COM-15 to instead spawn on this shelf instead of instead the glass chamber.
The room acts as one of the possible spawn points as a Scientist. Possible Spawns:
- Inside the glass cage
- Along the right wall:
- On the shelf:
LCZ Armory - ##00
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Armory Access Tier 1 Required |
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SCP-079 AP Cost: 50 AP |
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Door can be destroyed with explosives, SCP-018 and SCP-096 |
The LCZ Armory is a medium sized room containing two Workstations and multiple guns, grenades and ammo. The room requires Armory Access 1 
Armory Access 1
to open it.
The large amount of loot in this room makes it a great spot for civilian classes to quickly stock up on weapons to arm themselves.
The room acts as one of the possible spawn points as a Scientist, spawning outside the armory.
The room contains a variety of weapons and ammunition to choose from.
Guaranteed Spawns:
- Firearms:
- Grenades:
- Ammo:
- 9x19mm (150 Rounds)
- Body Armor:
- Other:
Heavy Containment Zone Checkpoints - EX-A/EX-B
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Checkpoint Access Required |
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SCP-079 AP Cost: 10 AP |
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Door can only be destroyed with Remote Admin |
The Heavy Containment Zone Checkpoints are the gateways to and from Heavy Containment Zone. There are two checkpoints found within the LCZ.
Each checkpoint contains two doorways that will both open once a Keycard with Checkpoint Access 
Checkpoint Access
is used.
The checkpoints lead to a pair of lifts denoted under either Lift A or Lift B (depending on the checkpoint), which lead down to the HCZ. There are also screens at either checkpoint displaying the remaining time until Decontamination.
When there are 30 seconds left before Decontamination occurs, all checkpoint doors will be permanently opened and cannot be shut.
The room acts as one of the possible spawn points as a Scientist, spawning on the LCZ side of the checkpoints.
Related article: Soundtrack
Possible Spawns:
- On the checkpoint itself:
Test Chamber 1 - TC01
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Containment Access Tier 2 Required |
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SCP-079 AP Cost: 40 AP |
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Door can be destroyed with explosives, SCP-018 and SCP-096 |
Test Chamber 1 is a small room with two doors that lead to smaller rooms. One doors leads to the control room, and requires a keycard with Containment Access 2 and Checkpoint Access 
Containment Access 2 Checkpoint Access
to open.
The room acts as a small testing room for Site-02 staff to perform experiments; it is currently being used to test SCP-330.
The door on the left leads to the control room. It contains a guarnteed spawn for a Zone Manager Keycard and Combat Armor. The first of which spawns ontop of an interactable document of SCP-330 Test Logs. These logs detail events that took place at an unknown year. Inside the nearby coffee mug is a guarnteed spawn for a Coin.
The control room has a computer that will unlock the other door in the chamber when interacted with. This door leads to SCP-330, where players can grab candy from the bowl. It is possible to lock the chamber door and trap players inside the room.
Both rooms are connected to each other by a breakable window that has high HP.
Guaranteed Spawns:
- Inside the Control Room:
- Zone Manager Keycard
- Combat Armor
- Coin (inside the mug)
Possible Spawns:
- Inside the Control Room:
- Outside the Containment Chamber
SCP-173's Containment Chamber - PT00
SCP-173's Containment Chamber is a two story room that is the spawn location of SCP-173.
On the bottom of the floor is a staircase. When climbing up the staircase, a side room can be found and a door which leads to SCP-173's chamber.
In the preceding room before SCP-173's chamber, there is an inaccessible door to the right and a balcony to the left with an inaccessible control room on the upper level. There is also a gate alongside the wall which leads to SCP-173's Containment Chamber.
At the beginning of the round SCP-173, if selected, will spawn in the containment chamber. The door cannot be opened immediately due to a short timer.
The chamber itself can be used as a hiding place from any threats.
In the side room next to the stairs, there is a chance that a COM-15 will spawn on the desk.
A Standard Locker can sometimes spawn next to SCP-173's containment cell.
Possible Spawns:
- On the desk in the side room:
- On the right side of the wall in the side room:
- Outside the containment chamber:
SCP-914's Containment Chamber - #914
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Containment Access Tier 1 Required |
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SCP-079 AP Cost: 50 AP |
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Door can't be destroyed by any means (Containment Gate) |
SCP-914's Containment Chamber is a medium sized room that contains SCP-914.
To enter SCP-914's containment chamber, the player must first open a gate. The gate requires a keycard with Containment Access 1 
Containment Access 1
to open.
SCP-914 is the most important room in Light Containment Zone, as it is used to upgrade items.
Due to this, it is a popular place for SCPs to target, making it a dangerous place to be in at the start of the round.
Possible Spawns:
- Outside the chamber:
- Inside the chamber on the shelves:
Airlock - ALXX
Door can be destroyed with explosives, SCP-018 and SCP-096
The Airlock is a small, red-lit room with two doors on each side and a small dark side-room.
When a player opens one of the inner doors, the door on the opposite side will close. This makes Airlocks a great place to slow people down during a chase.
A Bulletproof Locker №7 can sometimes spawn in the smaller side-room. It can also be used for hiding.
The room acts as one of the possible spawn points as a Scientist.
Possible Spawns:
- In the side-room:
Hallways
Hallways are repeating connectors that connect unique rooms and other hallways. Most of the time nothing of interest can be found in them and they make up the bulk of rooms in LCZ. These rooms have pseudo-random designations - while the first two letters will remain constant, the two numbers will change with each room.
Straight Hallway - HS
A simple straight hallway that contains two vents on the upper parts of the walls. One of the upper vents contains one of five hidden Hubertballs in the game.
The room acts as one of the possible spawn points as a Scientist.
Corner - HC
A simple corner hallway.
3-Way Intersection - IT
A simple three way intersection.
4-Way Intersection - IX
A four way intersection.
A Sinkhole can sometimes spawn in this room. By default this is turned off, however server owners can change the config to allow for a percentage chance of sinkholes spawning.
If a sinkhole is present, players who walk through it (that aren't SCPs) will be slowed down. Unlike in Containment Breach, sinkholes will not teleport the player to the Pocket Dimension; this is intentional.
Impossible Rooms
Impossible Rooms are rooms to do not naturally generate under normal ingame conditions despite existing as apart of the generation code. The Impossible VT00 is that of an older version of the room. In version 8.0.0, the update that re-added SCP-079, VT00 stopped generating for unknown reasons. Despite this, the room was still updated to support SCP-079.
Map Layouts
There are five possible map layouts of Light Containment Zone. Special Rooms are randomized in these layouts.
The Class-D Cells always spawns in the same exact spot for all five layouts, which can allow Class-Ds to figure out the layout early in the game.
Credits:
- Mooshua - SL Layout Creator. This website is not official.
Trivia
- Light Containment Zone used to have SCP-012's Containment Chamber. The chamber itself was a SCP: Containment Breach asset, and was replaced with Test Chamber 1 in the 11.1.0 update.
- The announcement in-game says that the LCZ decontamination process occurs in 15 minutes, while the actual time is 11 minutes and 45 seconds. This was intentionally added to apply pressure to the players.
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