Big Rock Campground and Store, Green Mountains, New Hampshire Amenities AMENITIES Tent camping is available - We have 10 tent sites, some  along the pond and some out in the woods. RV hookups are available - 15 RV hookups - We have 15 full service hookups. With a maximum 40 foot length. Some of our RV sites just have water and electric and are good for popups. Pets are allowed - Clean up after your pets and they must not bark all day long. Campfires are allowed Has Store - We offer a full service store including hotdogs, pizza, and popcorn. Some breakfast sandwiches are also served. Grocery store nearby Pool - 20X40 crystal clear pool. No Game Room