If I remember the quest correctly, there's a bloody skull on the altar in the center that opens a passage directly in front where the quest then continues. If it is bugged, clear your cache files on console or load a previous save. Or, on PC, type in the console (~): "setstage DLC2dunKolbjornQST 150" (no quotation marks).
GandalfTheCoo wrote: Its when he gets you to locate the missing miners, thats where it has glitched
You need to find the corpses of Bradyn and Mireli and make sure every single Draugr is dead. The wiki page is here for the specifics. If you have and it's bugged, the only solution I can think of is to use setstage DLC2dunKolbjornQST 250 on PC or otherwise reload an earlier save.