Nope, it dead ends here.

Oh well. Back the way they came.

"Now what?"

"Dunno, let's see if there are other fun secret passages anywhere."

"...I'd prefer one that led out over one that was fun."

"Well sure, but if we go one by one we'll inevitably find the one that leads out."

"Unless there aren't any."

"It sounds thematically inappropriate for someone who installed puzzles and secret passages at all to not have one extra exit or two."

"Thematically?"

"If you were building a tomb with secret passages and hidden rooms and puzzles to get through them, would you have only one way out?"

"Exits for the workers maybe. But I'd have those collapsed afterwards."

"Well, in the worst case we can try to dig our way out. Come on, let's go."

"Okay."

Onwards to the next place!

Back to the main chamber, or proceed towards the entrance.

Is there anything more to explore in the main chamber?

She hasn't given it a close inspection, but there wasn't anything obvious.

Let's at least look for nonobvious stuff.

Nothing turns up.

Back to the entrance, then!

Still full of rocks!

"So should I just try to barrel my way through the rocks?"

"I don't think that would work."

"You keep ruining my ideas," she says, grinning.

"...You have bad ideas."