It ascends the far left arete of the wall. Start up the wide crack, and then continue up the blunt arete. I mostly climbed a foot left of the actual arete. It would be quite a bit harder if you kept your R side on the R side of the arete. Finish on the ledge, then continue up to the tree anchor above.
Lmk if you know the FA info.
It is on the far left.
Boston, MA
UMass