powderglut: Thanks for the description. I don't see a road at that exact location; perhaps you mean here? Also, I see that in a thread you started earlier this year you mentioned a "road closed" sign somewhere along Old Sheffield Rd. Where is that intersection? I assume it's not in the way of driving to either the parking spot you mentioned above, or the recommended trailhead for Islomania Dome? (The discussion of the road closure beyond Harris Wash trailhead is also in that thread: there's at least one claim that the road was not marked as closed earlier this year.)