Originally Posted by dman
Whitehouse Creek (or Canyon, maps vary) is just south of Rossi Road which goes into Costanoa. The state park (Ano Nuevo) is being developed on the inland side of Hwy 1 so the dirt may soon be paved, or possibly closed to vehicles. At least that's my speculation, no facts.
It should stay open, since it provides access to a number of home sites (past the area posted closed). Paving, well I guess that's possible if there's money for that...
It isn't too exciting (starts straight and flat leading into a short hill section and a few corners) but it gets you to a trailhead where you can hike into Big Basin or the Cascade Ranch portion of Ano Nuevo. Signs posted to keep it slow on the curves and hill, and I've encountered a good number of people walking or biking. Not a good place for opening up a dual sport on the dirt IMO, but fun for a casual detour or general exploration.