I think about the analogy of folding spacetime when I see things like this... what could you used to fold a 4d region of spacetime into a fifth dimension to cre

I think about the analogy of folding spacetime when I see things like this... what could you used to fold a 4d region of spacetime into a fifth dimension to create a “wormhole” and where would it lead? I’m not even sure what this would mean!