Roden Lifepaths

I’m building a Roden NPC and notice the Scratcher lifepath has Tunneling listed as a skill. The skill is not in the BWG or the Monster burner. Should I assume it works similar to Dwarven excavation, but limited only to tunnels?

It’s a skill for creating stable tunnels and maintaining them. Useful for underground transportation, siege warfare, and mining.

I have no list of Obstacles, though, and my book is at home. Are the Excavation Obstacles similar in intent as above?