As you know, the gate looks just like a metal bars. Why it don't look like a big, wooden doors?
It will open when it's owner want to go through it. Just like a NORMAL gate. Enemy will be able to open it with hammer :D.
I think it's supposed to be a portcullis.
Maybe. But it's still not a gate. Portcullis is just a metal element.
Customer support service by UserEcho