Stuck on the last bit

[SpiderPig]

Im in the room with all the pillar things going across the room. Theres a barrier (fence) along the top but their doesnt seem to be a way through.

Any help?

 

[Grand Architect]

I'm taking a guess at where you are, if you are in the tall square room with many moving pistons/presses cress crossing above then read:

Spoiler

look up at the top there is a piston/press that is next to usable wall place a portal there. Step though when the piston is there for footing then place a portal on the floor in the area fenced off.