Use the same approach as for Herring Dome, but before going up to the base for Sea of Tranquility cut left under formation below the dome. The large low angle apron with small bushes is the general starting area.
Start at the foot of the apron near some black knobs. A variety of options exist. Continue to the left side of a big golden roof. Above scramble to a short steep wall and ascend a variety of options, or skirt out left. A few hundred more feet will take you to the summit of Herring Creek Dome.
Mixed rack to #3 depending on which route one takes. To borrow a phrase of John Gill's, "option soloing" is very viable here.
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