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from here]
Tolten tried to seem confident as he took the lead, proceeding further into the dark corridors. There had been nothing overtly threatening so far, but his heart was racing in his chest even so. He couldn't shake a sense of lurking danger, of shadowing hidden fear. He tried to tell himself he was being foolish, but experience told him otherwise.
This reminds me of the sewers. Though hopefully there would be no failed experiments lurching about, hell-bent on human flesh.
And thoughts such as those will not calm your nerves. And now he was no longer alone, and he was bound by his honor to look after his companion. He couldn't allow himself to give over to old fears and childish worry. They would find an exit of sorts, find someone possessed of the means to help them, and... well, that was as far as he'd gotten but at least it was a plan.
The corridor widened suddenly, and Tolten faltered to a stop. He held up a hand and swung his torch in the opened space, taking in the change in surroundings.