When you get to the intersetion and look to the right, the creature has moved away from you and around the next corner. As you approach that corner, weapons on the ready, you hear it scratching at rock. You don't see it yet, but the claws on stone grate at your ears.
Peaking around the next corner, you see a large blur against the stone, scraping as if trying to dig it's way out through stone. It's natural camouflage and large (larger than a man) and reptilian body tell Kvarek that it is a marlit, a prized creature hunted by his barbarian clan whenever they can. Even dead, a cape made from its skin and scales maintains some of its adaptive camouflage properties, making it ideal for sneaking and hunting. However, Kvarek also knows that they are both forest creatures, not prone to being underground, and pack hunters.