Start up Little Cenotaph to the break and monkey leftwards across the wall to gain the ledge on Smith's Arete. Make a couple of tricky moves up the slab to finish.
A variation left-hand finish exists at E3 5c. From a standing position on the ledge, traverse delicately leftwards for 2m to gain a finger edge (just right of the Peel's Wall RH finish). Climb the slab directly above by a couple of nice rockovers.