Help! Stuck in Geirmund's Hall! :( [SOLVED]

[Aiya]

I made my way through Geirmund's Hall past the stones, and the bridge. I stepped up to kill the boss at the end and managed to kill him before he was able to disappear and start attacking me. I looted his body, got the fragment for the necklace. Everything was working correctly until I began searching for a exit. I've looked at videos and other forums and have seen where the opening should be, but it is closed with no way that I can tell to open it. I don't have any earlier saves to load either. Anyone know how to fix this?

[cfs111]

This is a vanilla bug with no solution listed over at the UESP. So, open the console and type in
coc whiterun

Once you reappear just fast travel anywhere to insure all scripts have started up.

[alexander_dougherty]

I can't recall Geirmund's Hall, but have you looked around for a switch? I only ask because someone last month was asking a similar question (different quest though) and it turned out they hadn't even thought of looking for a switch (there are three different kinds)

[Aiya]

Typing that into console worked and I was able to fast travel. I hate missing out on treasure though. xD Thank you for the help