L to R R to L Alpha
Start with the left hand on a good crimp, and right hand low in an undercling. A block on the right may provide useful in starting the problem. Pull on and work the right hand up a series of underclings then big move left hand to the lip. Textbook mantel.
From the base of the arete slab, walk left into the pit passing Lost and Losing and scramble up the hill.