Hoboy. You obviously have a taste for adventure. Definitely not on the Arete 101 curriculum, this is more of a seminar for majors.
The P.O.D. for this one is immediately right of Hidden Assets. Pull off the ground, clamber up to the ledge. Steadfastly ignoring the attractive, secure, and well-protected corner, summon the brass and move up the arete to a pine tree lower-off.
Protection
I recall some brass coming in handy. At least, I put it in.