Mt. Moon Community

i'm on the bit where you go through the portals but im syuck in the first portal 'cos its a one way portal to a golden box, i've tried wall jumping but it doesn't get me high ebough, help please?

Try to be a bit more specific. Portals?. Whats the name of the level? This is in the Subspace Emissary, right? (I'll take a guess and say The Great Maze?)