How do you get back up to the clock room with Rue on the Solstice run?

[amelia]

Rue asks you to take her back to the Clock room but on the way down to the surface in the Refuge, the squares blocked the elevator door. How do you get back up to the room?

[Nélic]

You can go back by a second elevator which is on the left.

[amelia]

Oh. Okay thanks!