Hi, I can't enter the raldbthar market. I'm not talking about the bridge puzzle thing that I know exists inside cuz I've read some spoilers. I can't even get to that. I enter the market and right in front of me was a big iron door. After opening that, the way is stuck, and there are no levers / switches anywhere. How do I enter the market?

Thanks in advance.

http://www.uesp.net/wiki/Skyrim:Raldbthar_Deep_MarketHope this helps i haven't been there so i don't know myself, if not there's a second entrance in blackreach i believe.