She is moved. The elevator doors close behind her, and it starts descending.

It descends slowly and smoothly and for a while. The elevator walls are glass and she can see darkness and the space between chambers outside.

Again, why is there a building this fucking big?

Perhaps the big robot person can answer that question!

"We are going to go find another portal device for you," she comments lightly. "I hope you won't throw that one away, either."

"Yeah, that'd be real fucking unfortunate."

"Of course, if you do, we can just have you find another one. This is a large facility. We won't be running out of portal devices anytime soon."

"I bet."

Down down down goes the elevator, and... apparently not to a test chamber.

Surprise surprise.

It eventually teaches a metal base connected to another metal catwalk overlooking a bottomless pit. The doors open.

Good for them.

What if the elevator becomes electrified?

...Out of the elevator.

"Very good! Now please proceed along the catwalk."

...Fine.

The catwalk continues on for a while, hanging above the void, until it bifurcates.

"Turn right, and take the stairs."

What's to the left?

Catwalk continues on into the darkness.

Left it is.

"That's not the right way."

"Imagine that."

"If you don't go the right way, you won't find the portal device."

"You don't want to just get stuck down there forever, do you?"