Difficult slab with crux slopey mono solution pocket. Very unique. Looks much easier than it is. Friction dependent; long arms and good footwork will help too.
Location
Follow the main trail up. When it breaks right, continue heading up and slightly left on a faint (maybe nonexistent) trail. Eventually on your left you'll see a 20-foot mossy wall with an obvious crack. Skirt the wall and you'll come out in a clearing. Mr. Big is on your left. Start in the slopey horizontal at the 7-ft level and go up.
Note: there are several other good problems in this area worth exploring.
Protection
Maybe a pad if you want to have working knees when you're old.