11m. Start at the lower-off point on the ledges at the top of The Link (below the upper right hand part of Railway Tunnel Wall). This is best gained via Hammy's and The Link. Climb straight up above the belay passing the R side of the concretion. Holds on the concretion seem sound. There is one hard move gaining the last bolt.
Could be done with Hammy's and The Link as as one 30 m pitch although for this it would probably be best (to avoid rope drag) to stop at the belay below the upper wall to pull up the rope and re-drop it.