Grimrock

After The whole teleporter thingy and the whole I demand a sacrifice there is a door that opens when you press a switch but closes shorty after. How do I get passed that, this is close to where you open the silver door with the torches on the wall thing. If I can get a hint and not a whole solution would be nice , thanks for the help

Look for a way to open a shortcut to the door.

Look for a switch (maybe button) to open a new, shorter, path

I though the button is what allows me to go to the torch place , and did not think of it as a short cut.