Samuel heard the sound of fighting. However, when ariving at what he thought was the origin, he saw nothing. At first he thought that there was a person in need of help, but when he heard a scream which sounded like it was coming from no other than himself, he got suspicious. He remembered the Lore Master saying something about his senses being tricked, but he still couldn't put aside that if there was someone in danger for real, that he needed to be there faster. He made the horses walk a bit faster, making sure that they didn't run into anything while also keeping on route. If this test was about him needing to save someone, so be it, but he still didn't trust his senses and he wasn't sure what the tunnel wanted from him.