U L C: hourly slide

In the year 1870 a metal slide was discovered at __________ near a beach. The slide could be accessed via a long ladder. Once at the top the slide is enclosed and it seems to be short.
But once the slider goes for it it lasts way longer then it's supposed to and has way more turns and drops then what was previously seen. Some reported sliding in a loop and somehow going upwards in some instances.
Some also reported hearing knocking noises on the metallic walls halfway through and even someone sliding behind them. Sometimes they see nothing, and in rarer occurrences they see a younger version of themselves sliding behind them a few minutes after the sighting. This clone will pass through them and proceed. However the frightening feature about this doubleganger is that their smiles are large and they only have one eye on their forehead.
Then laughs would echo through the slide from all over the place followed by screaming and crying. The slider is unable to stop the entire way til the end.
Some didn't come out alive as only a body bag with them inside was found.
But others did and they were paranoid for the rest of their lives as a man broke through the side of the slide and crawled towards them. Right when they screamed and accepted their fate they found themselves in a random location.
We have decided to destroy the slide and burn all of its parts in the hopes that it would prevent more victims from their worst sliding experience ever.
???
Edit 2- I've been able to put it back together as I stole a few pieces from the slide and I placed it in the ________ containment area. I am going in right now to finalize the research.
2:30 pm
I am seeing journals glued to the wall. It's about all the missing individuals that went on this slide.
6:40 pm
I am hearing a few scratches here and there and a few whispering voices.
Midnight
I have been in here for hours and I saw the crawling man. This time he came from the roof. He had a sword in his mouth and his stare seemed psychopathic. It was a mix of a spider and a man. I punched him in the face and I was freed from its grasp. I think it was trying to surround me in a body bag.
2 days later
I was getting hungry and thirsty and it was incredibly warm. That was when the fire came. I pushed myself to go further down the slide and in a final loop I dropped into the Atlantic Ocean. Thankfully there were boats around so I got saved.
I think the u l c organization found out and burned the rest of he slide. Well, I guess I'm no longer welcomed there now. End of log.