a modular fold - out camping unit so designed as to be carried largely by a vehicle &# 39 ; s hitch receiver for transportation while independently supported to the ground with height adjustable legs while in use . the standard is comprised of a , largely hitch supported , load - carrying base plate , supported by a regular or extended hitch arm , creating the floor , or part of the floor , of the camper , with optional additional floor boards attached with hinges as to be unfolded into an extended floor area whereupon an enclosure in form of a semi permanent tent structure is erected .