Oh i found a solution to this.
Skyrim fellglow keep locked door.
On the left on top of some unusable barrels is a random battleaxe.
If the dragonborn is not on any quest related to the keep the door will be unlocked but access to the path leading to the ritual chamber will be blocked by rubble.
You can go through the dungeons to reach the keep.
Ahead the passage passes through a door into a room on two levels.
One briar heart inside the 1st door on the left.
The coven has since been destroyed by the dragonborn on a quest to recover some stolen books.
The keep is home to a coven of mages lead by the caller.
The main door to fellglow keep is locked and requires a key when first discovered.
Coming from fellglow keep dungeons a fallen shrine of talos can be found lying on a pile of rubble in the first room with the novice conjurer and apprentice storm mage.
Carried by a mage in the fellglow keep area.
In the nearby ruins the ruined tower there is an entrance to the fellglow dungeons.
A shrine of julianos can be found behind an adept locked door which can be unlocked with the fellglow keep key.
Fellglow ritual chamber key ef.
Fellglow keep fellglow keep is a keep located to the south west of winterhold.
The door which cannot be picked and requires a key to open opens at the top of the stairs in the dungeon where orthorn was held.
The dungeon entrance was not.
Opens the main entrance a locked door in an l shaped room in fellglow keep area and the door from the dungeon and the keep.
In a ruined tower there are stairs leading down to the door into the dungeon.
To the north is an alcove with a locked door to fellglow keep dungeons.