Ki_cat_ posted... I can't find anyway inside. When I go in the temple entrance, things have fallen.
Some are only accessible when you are on a quest. I got slow time when i joined the storm cloaks and went on a quest with them. I'm guessing there is one for the imperials as well and maybe some others.
I tried going in there when i haven't joined either factions and there was a shattering that kept me from going.
You need to join the stormcloaks in Winterhelm, I have a walkthrough on my youtube channel - http://www.youtube.com/user/jamsungwhaaat - You can see how to join the stormcloaks, later I will have a Korvanjund walktrough up :)