SCP Foundation

I took the piece of advice on writing an SCP based on what makes you terrified, decided on a rollercoaster. I need some help on what it does, draft so far is here: http://scpsandbox2.wikidot.com/rosmaro-morsa
I was thinking of making it cause victims to relive warped past memories, and emerge with information they could not have known otherwise, need more hook i think.

I want it to be fundamentally different from SCP-112 or 823 so i can't be done over for copying or anything

Any help is appreciated, thanks.

I've added a fair bit more, I was thinking that it causes subjects with erased or suppressed memories to remember them, and then places them on an operating roller-coaster somewhere else in the world, and makes them basically yell about all the secret stuff they know. Not really sure whether this is an interesting topic or not, and how to properly explain it in document.

Help appreciated