Mud is right.

   "I'm just going to see where this trail leads to, okay? I'll be right back. It leads down to a stream. Here is a place where we could cross the stream if you want to."

     "That's okay."

     "It's barely deep at all and you could step over it."

     "Oh, let's just keep going."

     "I haven't been entirely lying when I say I know where we are." 

Oliver found me a walking stick. While examining it, I stepped into a very deep puddle and lost my shoe. Oliver retrieved it, heroically, and washed it off for me, scraping his knee. So you see: adventure. And mud.