Just went down a rabbit hole about caving. While I personally possess absolutely no desire to contort my body through a hole in a rock and possibly get trapped and die, watching other people do it is exhilarating. -Drazwaz

I really enjoy going on a city’s Craigslist, then to “rooms/shared” (or whatever it is for finding a room mate) and then typing words like “warning” or “beware” in the search to see what kind of horror show nightmare room mate scenarios people have decided to write about.. its usually some juicy headline like “warning!!! Do NOT rent from this woman!!!! She is a PSYCHO!!….”

And after reading it, it’s always a guess to decide who is the actual crazy person, the landlord or tenant. Could be a bitter ex, tenant, or a scam, or whatever. But it’s an easy way to dive quick into some weird corners of the internet that are filled with drama. -dyke_face

List of unusual deaths on Wikipedia. Spent several hours looking at this. -SomewhatSincere

I went down a flat earth rabbit hole on YouTube once. After watching Behind The Curve on Netflix I started watching videos by some of the people featured in that film. I really want to believe these people are trolling. That's the only way any of it makes sense to me. -snap802

I worked in administration at an aviation academy for a few years and decided I’d start listening to aviation podcasts since I didn’t know much about it. I came across a plane crash podcast that talks about crashes in history and how it improved the safety of flying.

I was fascinated by it, and found myself gradually needing to know more and listening to more of the same type of podcasts, watching videos, and listening to black box recordings. It was eerie but interesting at the time. Now, I regret it tremendously because since then I’ve developed horrible anxiety when flying. -contagiousphrase

Andrée's Arctic balloon expedition. Dumb, then numb, ass thought he could fly a balloon to the North Pole. They had cyanide capsules and all, in case they crashed and were about to freeze to death. Or get eaten by a polar bear during a three month night. He and his assistants somehow managed to do both.

Plot twist: Andree, the worst captain of all time, noticed the balloon was leaking the night before they were about to leave, pumped it up a bit, and said 'f*ck it that'll do'. It did not do. -Needydadthrowaway

GeoGuessr, a web game that uses Google Street view. They drop you somewhere 100% random in the world, and by just walking around you have to figure out where you are and place a pin on the map to guess.

You can just aim for what country you think you're in if you want, but I got RIDICULOUSLY obsessed with getting it correct with pinpoint accuracy down to 1 meter. I would sometimes spend like 3-4 hours walking miles and miles around somewhere in the middle of nowhere Africa or Taiwan or whatever looking for enough clues for me to be able to figure it out.

Oh and it's worth noting this was at the very beginning of the pandemic when I first started working from home, so, yeah, abused it a little... -sweetroll312

YouTube videos of old chainsaw restorations. No idea why, but I guess that’s why it’s a rabbit hole. I don’t even own a chainsaw or have a need for one. -aretelio

r/fountainpens. You can grind your own pen nibs or pay a professional to do it for you. I never even considered just how personal everyone’s pen preferences are until I looked at a nib customization form. The way you grip the pen, how high or low you hold it, what angle, do you rotate it, what direction does it point in relation to the page, how do you like the ink flow, do you like it glassy and smooth or with a bit of feedback?

I didn’t know this before, but western pen brands tend to be larger in their sizing, and better for people who hold their pen at a lower angle, and Japanese brands are the opposite. I’m just now finding that you can buy a really cheap clone of a very expensive pen, and fit a flex nib into it—what most people tend to think of for “calligraphy.” Where you put some pressure down and get line variation. Most fountain pens aren’t like this, but everyone assumes that for some reason?

There’s just soooo much to learn about it. I’ve been in this rabbit hole for months lol. -GCCjigglypuff

I was watching that “it’s garbage day” video on YouTube and somehow I ended up watching videos of garbage trucks and the comments were um interesting. It was almost like a fetish to film garbage trucks. -Littlebirdddy

For about a month I was really into watching people extract ingrown hairs on YouTube. -LiterallyOuttoLunch

Jim Jones and the People's Temple. If you don't know who and what that is I highly suggest you read about it. -ListerfiendLurks

Mechanical keyboards. I wanted to buy one, so I started researching and watching videos of reviews. I went deeper and deeper, seeing special cables, obscure companies, the tons of switches, etc etc.

I stopped when a youtuber I watched made a video asking her viewers and discord users to stop bullying and harassing her for using some kind of switches or keycaps. I bought my keyboard and never went back to that crazy fandom. -NirvanaForce

Japanese Metal bands. Many of them are exclusively female and they absolutely CRUSH the American metal scene. If you told me 5 years ago that I’d be a huge fan of a bunch of girl bands from Japan, I’d have laughed hysterically in your face. Here we are though and it’s some of the best music I’ve heard in years.

Band Maid - Nemophila - LoveBites - Hanabie - Bridear

These are the best examples imo. Strange genre to get into at first, but all these bands are made up of truly incredible musicians. -Jalopy_Junkie

Saturation diving. Pretty crazy stuff but I wish I knew it was a thing when I was younger. Lot of money for only working a month or two. Too old to pursue it now. -Dm203b

I spent a bunch of time about 12 years or so ago reading about all the details of the titanic, how it sunk, what happened as it was sinking, who died, who survived. I got into the life stories of the people who died, and what became of the people who survived. And then I very nearly bought a piece of carpet from the titanic. -SweetCosmicPope

An Uncle John's Bathroom Reader. Started with 1 and ended up with a 20+ collection. -originalsanitizer

When I was doing some research on royal love marriages in college for an assignment, and I still have no idea how this happened, I somehow got to the Wikipedia page for Webkinz. It was like a 5 hour research session, and I don't understand what happened.

I have done many research rabbit-holes in my time, but that one I still can't figure out what led there. -vampyreprincess

The multi-decade wizard battle between famous comic book writers Alan Moore and Grant Morrison. Long story short, Alan Moore is a ceremonial magician who worships an imaginary snake god named Glycon, while Grant Morrison is a practitioner of Chaos Magick. Both of them spent decades in a wizard battle, at least partly conducted through writing spells into their comic books. -Pseudonymico

Turning old planes into houses! About 10 years ago I found a company that would do it for you. The wings were decks and the plane was mounted to a pedestal that allowed it to be rotate with the sun! -BeeEyeAm