Klyman Sylar
"I don't know, I'm not a Ranger (not by any means), but I'll see what I can do."
Klyman will carefully inspect the worn down floor, checking for marks like scrapes from hobnail boots, or claws tough enough to dig into stone, or flakes of dead skin from the feet of unshod travelers. Or just anything else, anything that doesn't seem to occur naturally in a subterranean passage like this one. If he finds marks left by hobnail boots, Klyman will trust to his Dwarven companions to differentiate such marks left by Dwarven boots and those left by other, more unsavory, boots.