Fat Stick/Generation Gap into Yellow Ridge.
Bingo---sort of. Yorick has the picture right; it is the traverse to Yellow Ridge from a belay under the big triangular overhang at the top of the Generation Gap corner.
But the link-up is a different (and very nice) one that deserves more attention. (It was pointed out to me a year or so ago by Paul St. Pierre.) I think it is described in Black Dick as a variation on Fat Stick. The first pitch is trying 5.8. You chimney up the right side of the Requiem block (30 feet left of Generation Gap), step across to the main face, scuttle right around an overhang, and follow a seam in a shallow open book to a good horizontal. From there a traverse right around a corner leads into the Generation Gap/Fat Stick Indirect open book and the route continues as Yorick said.
(One can move left, rather than right, at the horizontal and climb a bulging 5.10 face. But then you'd probably finish on Baskerville Terrace.)