Follow the wide crack to an awkward roof encounter. After turning the roof you can either continue slogging up this crack or bail to climbers left and head to the anchor bolts of Old Hornington. If you bail left, be sure to protect the follower with some high pro as they will be mid crux when pulling your last piece before the traverse. The fall would be ghastly
The obvious wide crack system that splits the dome. The start is in the 6" crack at the base of the big left facing corner. No idea on how you get down. I would guess you could find some rap anchors by Irish Toothache or scramble down to climbers left.
Pro to about 4" should cover it. If you do the entire route, take some extra stuff in the 1.5" to 2.5" range.