We stayed in Lot 1 of Smugglers Notch ski resort. It's a big gravel parking lot used during the ski season and left virtually abandoned during the summer. Not sure it's technically a campground, but Vermont has liberal dispersed camping rules. No facilities or anything, but we just slept in our car, cooked on our stove, and drove somewhere else in the morning for bathrooms. Met a local who told us about a lake at the top of the slopes. Other than that, never saw anyone else. Apparently bears are nearby but we saw no signs. Second picture is looking up a ski slope a few paces from the lot