exploration of SCP-518 (see Exploration Log 518-1). Whenever 
SCP-518-1 is read in its entirety by a sapient, comprehending 
individual, SCP-518 undergoes spontaneous physical changes. In 
most cases, these changes entail the movement of structures in 
relation to each other, rearrangement of the interior features of these 
structures, and a small amount of subsidence in the immediate 
geographic vicinity of SCP-518. In some cases, readings of 
SCP-518-1 will cause new structures to appear, or existing 
structures to simply cease to exist. Research has determined that 
these physical changes occur either instantaneously or at soeeds 
beyond the observational capability of current technology. 


The buildings that make up SCP-518 superficially resemble 
commonly found structures of the region during the 1850s and 
1860s. In addition to several houses, there are currently a barn, a 
three-story hotel, and a saw mill. However, the interiors of these 
structures are atypical of traditional dwellings and establishments. 
Features such as walls, floors and ceilings tend to be arbitrarily 
constructed; houses have been observed to have rooms with no 
doors, non-level floors (one dwelling is constructed with a "floor" at a 
37° angle), ceilings of a height of 1 m or less, etc. Furniture and 
household items typical of the period are also present, but are 
arranged haphazardly (in several cases, chairs and beds have been 
observed nailed to walls and ceilings). Other buildings contain no 
features inside, while the "barn" merely covers an open shaft 
extending to a depth of 120 m. 


The land area comprising SCP-518 is gradually undergoing 
conversion into a sinkhole, and is currently experiencing subsidence 
at a rate of approximately 2-3 m per SCP-518-1 event. Current 
projections estimate that SCP-518 will be completely submerged by 
the local water table after 25-30 additional SCP-518-1 events. 


Below is a partial transcription of SCP-518-1: 


This is the last Will and Testament of me, Asa Rutledge 
of Grett's Hollow, Kentucky’ made this eleventh day of 
February one thousand eight hundred and fifty-nine. | 
bequeath no material possessions, having none. 


[DATA REDACTED] 


Distance from | Time passed for Time passed for 
geographic observer on observer in 
centre of isiand| isiand outside worid 
5 Metres 7,884 ,000,000 1 Second 
Seconds (250 
Years) 
50 Metres 788,400,000 1 Second 
Seconds (25 
Years) 
250 Metres 157,680,000 1 Second 
Seconds (5 Years) 
750 Metres 52,600,000 1 Second 
Seconds (20 
Months) 
1.5 Kilometres 26,300,000 1 Second 
Seconds (10 
Months) 


Attempts to observe dilation at distances closer than 5 metres to the 
geographic center of the island have met failure. See Document 
3991 -Time-Measurement-Log.pdf for details. 


Observations have indicated the time dilative effect to be a property 
of the island's material, instead of a property tied to the entire island. 
3991-Sample-1, A small sample chipped off the island, was tested 
and found to dilate time in its immediate surroundings by a factor of 
1/ in relation to the entire island. This is consistent with the 
chipped sample comprising an estimated 1/ the mass of the 
entire island. 


The time dilative effect of the island poses significant geological 
problems. It is unknown exactly how the island's material differs 
from normal rock, as chemical analysis of 3991-Sample-1 indicates 
is composition is in line with what is to be expected east of Australia. 
As such, it is impossible to determine the boundary between 
SCP-3991 and the ordinary bedrock below. The ocean floor and 
bedrock below SCP-3991 experiences time significantly slower than 
its geological surroundings. The implications and effects of this are 
currently unknown. 


+ Post-Exploration Interview 


DATE: / /1993 

INTERVIEWER: Dr. William Tang 
INTERVIEWED: Researcher Gerald Dent, 
Assistant Researcher Howard Cain 


TANG: Based on what's contained in my file... 
[a flipping of pages can be heard]...your 
accounts of last week's events differ 
considerably? 


DENT: That is correct. 
CAIN: Yup. 


TANG: Okay...somewhat par for the course 
for the Foundation. Typical anomalous location 
procedures. Researcher Dent, can you give 
me an account of the events you both agree 
on? 


DENT: Yes, absolutely. Where should | start? 
Site 19? When we first sighted the island? 


TANG: It's my understanding that your ship, 
Transience, anchored about three kilometres 
off the island? You can start at that point. 


DENT: That's right. We anchored at about 
three P.M. with the island in full view. We 
weren't quite sure what the anomalous 
properties were yet, other than the fact that the 
island had spontaneously appeared the 
previous week. For all we knew, it could be 
teeming with 682's. Or it could swallow us 
whole as soon as we touched it. You learn to 
exercise a bit of caution when you're sent out 
to document stuff that has just.../clears throat] 
... appeared. | stayed back on Transience 
while my assistant, Mr. Cain, got on the dinghy 


with two others and set sail for the island. This 
is about the point when our accounts begin to 
diverge. 


TANG: [quickly jots notes]...Good...now what 
happened from your perspective? 


DENT: The dinghy departed fairly normally, at 
about 40 km/h. | saw it go normally for a while, 
then it just...vanished. Into thin air. About four 
seconds later it reappeared and approached 
the ship normally. Those four seconds were 
the worst of my life. | thought we were dealing 
with an anomaly that could make three crew 
members vanish into thin air, and turn them 
into ass-loads of lost personnel paperwork. 


TANG: Alright. Mr. Cain, what happened from 
your perspective? 


CAIN: Ours was fairly normal. We approached 
the island, though once we were about half a 
click away from the ship, it seemed to stop 
moving away from us. Even though it was 
nearly three kilometers away once we made 
landfall, it continued to look as though we were 
within shouting distance. The sides of the 
island are almost vertical, 70 degrees I'd say, 
so we kind of clung on while we made 
observations. They didn't send us with 
harnesses or trad climbing equipment, so we 
couldn't get very far. We chipped off a little 
sample, which as far as | know is in the safe 
object archives now, and left about an hour 
and a half later. We sailed back to the ship and 
found my superior, Mr. Dent, very distressed 
and happy to see us. | did notice that 
everything on the ship was exactly the same 
as when we departed, down to people eating 
the exact same food and sitting in the exact 
same spots as when we left. At the time, | 


brushed it off as Deja Vu. 


TANG: Good. Thank you gentlemen, that's all 

| need. | apologize for taking your time, it's 
standard procedure when exploration accounts 
are significantly different. I'll forward this on to 
site command and they can try to categorize 
the object. 


End Recording 


Requests for Experimentation with SCP-3991 and Related 
Samples 


+ FORMAT 


DATE: 

SUBMITTED BY: 

SUBMITTED TO: 

DETAILS OF PROPOSED EXPERIMENT: 
VERDICT: 

OUTCOME: 


+ Experimentation Request 01 


DATE: / /1995 

SUBMITTED BY: Researcher Gerald Dent 
SUBMITTED TO: Dr. Tang, SCP-3991 Project 
Overseer 

DETAILS OF PROPOSED EXPERIMENT: 
Measurement of exact levels of time dilation 
utilizing atomic clocks. Two clocks will be 
synchronized, one clock will be brought onto 
island, one clock will remain at Site-19. 
VERDICT: Approved 

OUTCOME: Field of dilation found to be a 
gradient, points closer to the centre of the 
island experience the island's effects more 
strongly than points farther away. 


+ Experimentation Request 02 


DATE: / /1995 

SUBMITTED BY: Researcher Gerald Dent 
SUBMITTED TO: Dr. Tang, SCP-3991 Project 
Overseer 

DETAILS OF PROPOSED EXPERIMENT: 
Two computer-controlled atomic clocks will be 
synchronized to activate exactly 24 hours after 
the initial activation command is given. One 
clock will be brought a specified distance from 
the geographic center of the island, one will 
remain at Site-19. Experiment will be repeated 
at distances of 5m, 50m, 250m, 750m, and 
1.5km. 

VERDICT: Approved 

OUTCOME: Table showing exact level of time 
dilation created, attached to SCP-3991 file. 


+ Experimentation Request 03 


DATE: / /1998 

SUBMITTED BY: Assistant Researcher 
Harold Cain 

SUBMITTED TO: Dr. Tang, SCP-3991 Project 
Overseer 

DETAILS OF PROPOSED EXPERIMENT: 
Extremely small atomic clock circuit will be 
used to ascertain if 3991-Sample-1 exhibits 
the same time dilative properties as the main 
island. 

VERDICT: Approved 

OUTCOME: Experiment unable to measure 
exact dilation effect exhibited by 3991- 
Sample-1. Suggested to repeat experiment at 
a later date when atomic clocks are smaller. 


+ Experimentation Request 04 


DATE: / /2006 

SUBMITTED BY: Assistant Researcher 
Harold Cain 

SUBMITTED TO: Dr. Tang, SCP-3991 Project 


Overseer 

DETAILS OF PROPOSED EXPERIMENT: 
Extremely small atomic clock circuit will be 
used to ascertain if 3991-Sample-1 exhibits 
the same time dilative properties as the main 
island. 

VERDICT: Approved 

OUTCOME: Atomic clock sufficiently small for 
measurement of time dilative properties of 
sample. Experiment determined that dilative 
effects are approximately of strength 1/ th 
that of the main island. Consistent with sample 
comprising an estimated 1/_ _ th the mass of 
the main island. File amended to reflect new 
information. 


+ Experimentation Request 05 


DATE: / /2007 

SUBMITTED BY: Researcher Gerald Dent 
SUBMITTED TO: Dr. Tang, SCP-3991 Project 
Overseer 

DETAILS OF PROPOSED EXPERIMENT: 
Measurement of time at geographic centre of 
island, using methods identical to Experiment 
02 

VERDICT: Approved 

OUTCOME: Atomic clock placed at 
geographic centre of island was not present 
when team returned to recover it. Presumed 
lost. 


Footnotes 
1. Cubical interior with 15cm edge length 


SCP-3992: Wondertainment Whacky Halloween Fun 
Masks! 


Item #: SCP-3992 
Object Class: Safe 


Special Containment procedures: All instances of SCP-3992 are 
to be kept in a standard containment locker at Site-17. 


Description: SCP-3992 is a number of children's Halloween face 
masks. Instances come in a range of designs, portraying various 
Halloween themed monsters. Instances are constructed out of 
simple plastic materials, paint and string. Each instance bears a 
label reading "Wondertainment Whacky Halloween Fun Masks" on 
their interior. 


SCP-3992 instances do not display any anomalous properties when 
worn by a non-anomalous individual. However, when worn by an 
anomalous entity, it will appear to physically change into an 
adolescent humanoid of varying appearance. Any clothing worn by 
the wearer will appear to change into a costume fitting the 
SCP-3992 instance's appearance. Clothing will simply appear to 
manifest on entities not wearing anything. 


To clarify, anomalous entities who wear an instance of SCP-3992 do 
not actually experience a physical change in appearance, but rather 
appear to become humanoid. Changes in an entity's appearance 
and manifested clothing cannot be physically felt, and affected 
entities may continue to function and interact with their surroundings 
as normal. This effect will cease when the SCP-3992 instance is 
removed. The physical appearance gained by wearers of SCP-3992 
instances differ significantly in bodily features, including skin tone, 
skin color, size and gender. 


Discovery Log: SCP-3992 was discovered on 24/ /20 , ina house 
in , Wisconsin, United States. The house had been seized by the 


Foundation under suspicion of anomalous activity originating from it. 
Among SCP-3992, several other anomalous items were found, a 
majority of which were of Wondertainment origin. The previous 
residents of the house were found to have fled the area and remain 
unfound. SCP-3992 was located in a cardboard box in the house's 
attic among several Halloween decorations. As of note, the name 
‘Stanley’ was found written on the inside of SCP-3992-6 (vampire 
mask). Records show a child by the same name to have been one 
of the houses previous residents. 


The following document was found along with SCP-3992: 


To our most loyal of customers during this most spooky 
of seasons, 


We at Doctor Wondertainment would like to give to you a 
very special gift in accordance with the holidays. For 
your continued loyalty over the years, we would like to 
present a very special treat to those of you who might 
find it rather difficult to fit in. 


We at Wondertainment believe in embracing what others 
may consider strange and spooky. There are too many 
wonders in this world locked away by those who just 
don't understand, or find the abnormal too scary. We 
know first hand that it can be troublesome accepting who 
you are, especially in a world of the mundane, so we 
come with wonderful news, that for just one night, you 
may go out and celebrate the strange and the scary 
without worry of what others may think of you! 


To our customers out there who struggle with these 
feelings on a daily basis, we have decided to give you a 
special free of charge reward this Halloween! A little 
something to show our gratitude for your continued 
support. In this box, you will find a complete set of our 
new Wondertainment Whacky Halloween Fun 
Masks!. Celebrate this Halloween with a costume so 
amazingly convincing you won't even be able to 
recognize yourself! 


Have fun out there kids! And try not to wander into any 
dark forests while trick or treating! 


And if you run into a headless fellow along the way, give 
him a good hello from us at Dr. Wondertainment! We 
miss you a lot old friend! We hope you’re being taken 
good care of. 


- Dr. Wondertainment. 


Addendum 3992-1: Testing of SCP-3992 on several other SCP 
objects was suggested as a means of discovering the range of its 
effects when used on anomalous entities of varying physical nature. 
Approval of various SCP objects for testing was authorized. 


Access Testing Log 


Test: 3992-1-002 

Subject: SCP-2006 (Taking the form of the 
Creature from the Haunted Sea) 
SCP-3992 Instance: SCP-3992-1 (Werewolf 
mask) 

Results: SCP-2006 appeared as an 
adolescent male humanoid wearing a torn 
plaid shirt and jeans. A pair of rubber gloves 
resembling clawed hands with grey fur 
appeared on SCP-2006’s hands. 

Notes: SCP-2006 was asked to change its 
physical appearance during the test in order to 
see how the effects of SCP-3992 would react 
to SCP-2006's shape-changing abilities. 
Several changes to SCP-2006's size, skin tone 
and hair occurred but remained humanoid. 


SCP-2006 initially refused to remove 
SCP-3992-1 at first, but eventually complied 
once researchers assured it that it was 
nowhere near as scary as its previous form. 


Test: 3992-2-001 
Subject: SCP-2662 


SCP-3992 Instance: SCP-3992-2 (Witch 
mask) 

Results: SCP-2662 took the form of an 
adolescent female. SCP-2662 appeared 
dressed in a black spider web themed witch 
costume, complete with a pointed witch hat 
and holding a broomstick (which disappeared 
along with the perceived effects of 
SCP-3992-2 when removed). To note is 
SCP-2662's appearance as a female rather 
than male. This is believed to have occurred 
due to SCP-3992-2 resembling a generic 
female witch. 

Notes: SCP-2662 commented on the whole 
physical change to be ‘Rather uncomfortable’. 
SCP-2662 later assured that what it had stated 
previously was not meant in any way to come 
off as disrespectful or insensitive, stating it had 
nothing against females and that they could be 
cultists if they desired. 


Test: 3992-3-001 

Subject: SCP-1279-1 

SCP-3992 Instance: SCP-3992-3 
(Frankenstein's monster mask)