I remember a door or gate, that opens underneath you when you walk over it. In the vanilla game. I simply need the ID of what this object is called so I can use it for my mod. I remember nearly everything about it, I just don't remember if it's a door or activator, or what it's name is. This is a very simple problem, where I simply can't remember the name of it. And google failed me. Any guesses as to what it is, would be highly appreciated.