I'm not sure exactly where it was anymore, but we stopped a night at Wombeyan Caves off the road to Bathurst from Goulburn. It was a steep, gravel road drive in, but when we got there the only others there were the park rangers, the caves and a couple of hundred kangaroos. There's toilets, GREAT HOT showers, fridges, freezers, an oven and cooktops, indoor fireplace and rec-room, fire-pits, outoor barbecues, provided for the usual national park fee. There's also guided as well as self-guided (I liked that) tours of the various caves, which are fantastic! ...I think there's a road to sydney's west as well. Check your touring maps!