"A pretty odd kink..."

She sticks her tongue out at Glint.

Kiss!

Yeah okay kiss.

Giggle! 

"...Now we need to get through this..."

"Looks like these rings can rotate..." She spins one experimentally.

It rotates! 

"The same symbols are on each one - they also kinda click when a symbol's lined up with that little notch on the top, do you feel that - ?"

"So find the right combination then... press the center button?"

Squint. "Maybe? It's got these weird indents on it, though..."

"...Wait hang on-" Elerki pulls a three-taloned claw out of her inventory (she saw the golden glitter in the wake of Glint's progress through the barrow with her atronach and picked it up without really looking at it). "I think this might match up to those."

She holds her hand out. "Can I look at it?"

She passes the claw over.

...Hm...

"It's got three of those symbols on the palm here..."

"Could be a guide as well as a key."

"Possibly. Or like some kind of ritual resonance thing - but then even if this isn't the exact combination it'll be related..."

"Let's give it a try, then."

Start with the pattern on the claw, top to bottom? 

Spin to win.

Giggle! 

And...

That works! The stone clicks and the door receeds into the ground when they insert the claw and turn. 

"That was surprisingly straightforward."

"Bet it wasn't much of a big spooky secret in its time."

"Yeah. Unless we've failed to disarm the hidden safety switch and we'll be pincushioned by poison darts then lit on fire as soon as we step through the door."

"I can ask Pyro if she wants to go first, before she dismisses."

"Might be prudent."

So - quick atronach test!

Which reveals that the dark area beyond the door contains stairs, which rose upwards into an actually appropriately lit cavern, with no signs of further draugr except a large tomb across the way from them, a deeply engraved wall arcing behind it...