First Landmark
The team spotted their first landmark after 3 hours of walking. They discovered a pile of bones, stacked to look like arrows that were laid on the ground. This was probably done so the video man could find his way back. Weirdly though, this was the only landmark that he made for himself, at least as far as filmmakers could tell. But they still had a ways to go, and the catacombs were getting smaller and smaller...