Redsand Canyon And the highway signs say we're close

Kallik remained where he was, even as the imperator swam out into the darkness. There was no light to take into his eyes, so he could see absolutely nothing. The auxillary relied on his hearing and scent still. 

Eventually Germanicus swam back and pulled himself from the water. When he began to follow the fox's trail again, Kallik followed closely behind. 

They came to another fork. Kallik inspected the passageway to the left. The scent was there, but it didn't extend very far. So he moved to the one on the right and found that the scent seemed to continue far into that passageway. 

Even in the darkness, he could tell the path was narrowing the farther they moved. His heart began to beat faster in his chest as he felt the stone walls against his shoulders. Soon he could no longer keep moving forward because he couldn't fit; panic pooled in his chest at the thought of getting stuck in here.