I drove my low-clearance front-wheel drive station wagon from Berlin to the Speck Pond TH (and the Notch TH along the way) back in June. Nicked the belly pan a few times on some rocks (not badly mind you, but I have a heavy-duty aluminum pan). So it is possible. Best advice: take it slow. Some holes and lots of random rocks sticking up here and there to dodge around. Took me about 1hr each way for the 12 or so miles. 20mph was only possible in a few short stretches. IQuest was with me in his truck (as we car-spotted at the Notch TH), and he only had to dodge a small handful of rocks, but he reported he didn't really want to go much faster due to the washboarding.
There is a small ditch, possibly from an old missing culvert, right before you get to the grass field by the Speck Pond TH. I couldn't avoid scraping the belly pan on it, you could park off the road before it and walk the insanely short distance to the TH if you didn't want to play with it. All other culverts at the time were buried sufficiently to not worry about.