just throw your pin at it. thats all

You just throw your pin at it then it rolls down the pipe (dont try to climb up the pipe)
the it rolls down into a different pipe in the wall you have to follow it.

well wat i jst know is u throw the pin in the hoop and it goes in to this pipe and i dont
know where it leads to or where it is

where does the seeing stone go after u knock it down? i know it goes down the pipe but i
cant get to that pipe