You go through the door to find another room. It's the same size as the other one you just wasted all that time in, while a clock was ticking down to something which may or may not be your doom. Maybe there is something in here that will help you escape.
Against the wall there is another perplexing contraption.
Hey check it out. Every week we'll be revealing some new troll characters from Hiveswap until Act 2 is out. Follow the Troll Call here, and meet the first two here. Expect a few more surprises like this to drop in coming weeks.