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Geometrical Lovecraft and the End of Existence
MDMA, LSD, Ketamine, Cannabis & Amphetamine
Citation:   LD 50. "Geometrical Lovecraft and the End of Existence: An Experience with MDMA, LSD, Ketamine, Cannabis & Amphetamine (exp110616)". Erowid.org. Jan 9, 2026. erowid.org/exp/110616

 
DOSE:
T+ 0:00
100 mg oral MDMA (capsule)
  T+ 0:00   insufflated Ketamine  
  T+ 0:00   smoked Cannabis  
  T+ 0:00 100 mg oral MDMA (capsule)
  T+ 2:00   insufflated Amphetamines  
  T+ 2:00 100 mg oral MDMA (capsule)
  T+ 5:00 2 hits sublingual LSD  
  T+ 5:00 100 mg oral MDMA (capsule)
BODY WEIGHT: 75 kg
Method of administration: MDMA = oral, ketamine = intranasal, speed = intranasal, LSD = sublingual, Weed (sour diesel) = smoked, Diazepam = oral

Setting: Psytrance party with friends, going home alone

Mindset: Excited but a bit tired.

Material: MDMA = crystals, ketamine = powder, speed = powder, LSD = tab, Diazepam = pills

Experienced with all used substances but not a regular user

Other medications taken daily: Bupropion 300 mg, valproic acid 300 mg

This is going to be a cautionary tale about impulsivity and timing your doses. I’d decided to go to a nice psytrance party with some friends in a venue that I really liked and I was in a really good mood. I was slightly tired from working all week but not in a way that it would interfere with the evening.

The evening started out with me missing my train, a bit of a bummer as I live pretty isolated and I’d had to wait another hour for the next one. Luckily it was around 22:00 and the train station was completely abandoned so I grabbed my pipe and lit up a nice bowl of weed and watched some Rick and Morty on my phone. The train ride was extremely relaxed and I didn’t experience any paranoia (this sometimes happens when I’m on trains while stoned).

It was around midnight when I arrived at the venue, by that time I was already pretty much sober. I couldn’t find my friends so I stood in the back for some time, just enjoying the music. When I finally bumped into my friends we went outside, smoked some weed and snorted some ketamine. After going back inside I felt slightly bouncy and my vision was somewhat blurry but besides that I didn’t really feel much effect from the ketamine.

We danced for about half an hour when a reputable source of MDMA shows up and asks if I’m not interested in having some. I wasn’t actually planning to take MDMA, I was going to look for some 2-CB and just keep it to that and weed but having the opportunity changed my mind. Luckily I had my scale with me and some capsules so I could prepare three separate 100 mg doses for the evening and took one immediately.

Fast forward to around 2 AM and I was coming up hard. We decided to go outside, did another line of ketamine (which again I didn’t really notice) and bumped into some other friends I hadn’t seen in a while. I stayed with them while the others went inside and felt way too happy that I saw them again. Hugs were exchanged and we sat down some more during which they asked if I didn’t want to do some speed. I normally avoid speed like the plague because it barely has any effect on me (I have ADHD) besides making me feel like shit the day after. But since I was peaking on MDMA I wasn’t really in a good state of mind to make decisions because I just said yes to everything and did the line
since I was peaking on MDMA I wasn’t really in a good state of mind to make decisions because I just said yes to everything and did the line
. I immediately popped some more MDMA for some reason.

The party is turning up great, I was dancing for hours, hugged random people, added around 50 weirdos on facebook,… When I bumped into the guy that supplied me with the MDMA I wanted to say thanks for making this a great party. It was around 5 AM at this point. I did my last capsule of MDMA and while seeing that he asked if I didn’t want to turn it into a candy flip. I accepted not realizing I would peak during my comedown.

At this point my memory’s a bit fuzzy, I know I went back inside and had the time of my life. My headspace was immense, I felt connected with everyone there and love them all and there were nice non-confusing OEV’s. I was getting a bit tired so I went outside again with my friends.

This is the point where an amazing party slowly morphed into a pure hell of confusion. My concept of time is completely destroyed at this point and I had no idea it was MDMA-comedown/LSD-peak time. Some guys joined us outside and started talking to us. They were annoying the living shit out of me, one of them was constantly telling how much he hated communism and how much he loved his girlfriend while showing me a blank screen on his phone and crying. My friends noticed that I was annoyed and they subtly asked if I didn’t want to go back inside. While my friends went back inside one of the group stopped me and started complimenting my nostril ring, which was nice but it for some reason I got a bit paranoid. I started thinking he wanted my nostril ring and was planning to rip it out of my nose so I went back inside to find my friends while I was a bit panicking.

When I got inside all I saw was pure chaos, I couldn’t see anyone’s face, the dancing crowd was just one big blob and I really started to get scared. I waited for a bit in a central area, hoping my friends would pass by because it was impossible for me to search for them at that point. My only attempt to find them in the crowd almost resulted into a panic attack because I was convinced everyone was angry at me for walking past them.

While waiting for my friends I started to hear people around me whispering what a loser I was, they should just kick my butt and throw me out, how ugly I was… Obviously nobody was saying that and with the music being really loud I’m pretty sure I wouldn’t be able to hear people whispering.

I was starting to feel really depressed and alone, I wanted to find my friends because I really didn’t feel like walking to the train station alone and I started crying a bit. Someone noticed I was going bad and wanted to help but I misinterpreted it, started panicking and just ran out of the venue onto the street. Being outside and seeing sunlight made it easier for me to coordinate and everything wasn’t as chaotic anymore. I decided I’d just go home because my friends obviously ditched me (they didn’t, they stayed until the party was over because they couldn’t find me and weren’t able to contact me).

I had no clue which way I had to go and didn’t recognize anything so I just randomly walked into some street that I recognized which luckily turned out to be the right way. At this point it’s 8AM on a Monday morning in a busy city so there were a lot of people walking around. I saw everyone looking at me angrily, like they despised my being there and that they really wanted to hurt me.

The whole walk to the train station turned into a living nightmare. I barely could see anything in front of me because everything was morphing and I constantly forgot where I was. I started walking into wrong streets because they looked like ones from different cities I wasn’t in.

I tried to use my phone to find the way using google maps but when I started watching the map I started to see weird stuff. The lines were constantly morphing and I knew something was horribly wrong. I looked up and saw strange, dark lines all over the place, forming face-like geometrical structures. I also knew that they were things I wasn’t supposed to see, it felt like I could see into a realm humanity wasn’t supposed to venture in and just looking at it would make me insane. The faces were some kind of entities to which our dimension was like a grain of sand. Somehow I knew these things were worse than the purest evil that could ever occur because they weren’t evil. Their nature would just destroy all existence. Me looking at them made them aware of us and curious. But their awareness would destroy everything. Every time I saw the lines appear I heard a loud, deep singing and I saw reality being torn apart and had to look the other way or I’d probably run into traffic.

After what should have been a 15 min-walk but took 2 hours I arrived at the train station. The lines were covering the entire sky at this point so I ran in and noticed the train station was absolutely packed. They were all looking at me and knew that I did something horrible, I destroyed everything. I tried to look up which train I had to take but couldn’t understand how it worked. I didn’t understand the concepts of different platforms and just walked around from platform to platform until I would find the train I could take. When I finally figured out which platform I had to go to I forgot that it was the correct one when I arrived and just left again. The faces started to come inside and I saw people’s face morphing right in front of me towards the entities I saw. I’m pretty sure I started crying.

After about an hour I managed to operate my phone and looked it up online, I went back to the correct platform and every time I got up to leave because I thought I’d been sitting there for hours I’d just check my phone to reassure that I was in the right place. Time was going incredibly slow at this point, like seconds felt like hours. I had to wait for about 30 min before my train arrived which was pure hell. Everything I looked at for more than a second started changing in one of those entities
Everything I looked at for more than a second started changing in one of those entities
and everything around it just got sucked in.

The train finally arrived but that wasn’t the end of my ordeal. The OEV’s stopped but I could still hear the chanting. My body was exhausted so I started to nod a little but every time I fell asleep I fell into the realm where those entities were. I got incredibly confused and thought I was on the wrong train because I didn’t recognize anything, decided to go to the toilet and just do some breathing exercises there to calm myself down.

When I came out of the toilet I forgot where I was seated and where I left my bag. Luckily a nice, old man noticed something wasn’t going ok and helped me find it after which he left me alone because he noticed his presence made me extremely anxious (or I looked like I was going to stab them for drug money).

I arrived at the train station and took my bike to ride home (I know this wasn’t a really good idea considering how hard I was still tripping, but I didn’t feel like walking another hour). Biking went pretty well although the OEV’s started coming back hard, it looked like everything that was more than 5 meters away from me was on fire and the occasional elder god came in to wreck everything in sight but I was pretty calm. At this stage I was just really glad I was going home so that helped me relax.

Arriving home I noticed all the doors were locked and the shutters were down so I couldn’t get in. I started panicking and crying again. Normally my sister and her boyfriend would be up at this time ( it was 11 AM) but they had overslept so everything was still closed. I was really scared to wake them up and I was sure they would just be angry and keep me outside. Luckily my sister’s boyfriend woke up because of all the noise and opened up for me. They weren’t angry at all but rather concerned because I looked like a monkey on a meth binge.

Going in my room I noticed that I was exhausted but I was still tripping and the visuals started getting stronger again. I took two 5 mg diazepams which normally would knock me out in a few minutes. They didn’t help and I was having a really bad thought loop about my girlfriend so I took two more and I finally kinda fell asleep.

Waking up a few hours later I felt extremely depressed, everything looked really intense and hostile and my thought pattern was still all jumbled up. I tried to play some Saints Row but just ended up running against walls and not really doing anything. I felt pretty bad for the rest of the day and the days after that.

Conclusion:
- Candy flips are a terrible idea if you did MDMA first

- I’m really lucky I didn’t accidentally hurt myself

- Mixing substances can have disastrous results if you’re not really paying attention to what you’re doing.

- Did end up with some more insight in my own psyche and this would have actually been an interesting but heavy experience if it were in a safer setting.

Exp Year: 2017ExpID: 110616
Gender: Male 
Age at time of experience: 24
Published: Jan 9, 2026Views: Not Supported
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MDMA (3), LSD (2), Ketamine (31), Cannabis (1), Amphetamines (6) : Difficult Experiences (5), Entities / Beings (37), Hangover / Days After (46), Combinations (3), Rave / Dance Event (18)

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