Well, the Switchback has cover UNTIL the part where it starts on the map. From there to the entrance is coverless. And the climb up to the secret entrance is a DC20 climb, I believe.<br/><br/>Basically, this place is gonna be a fuckin' nightmare to sneak up on. At the moment I'm working out whether it would be a decent idea to split into two or three parties and hit the ruins from multiple directions, but I need to work out how impassable the Switchback actually is...