A wagon is a four-wheeled, open vehicle for transporting heavy loads. In general, two horses (or other beasts of burden) draw it. It comes with the harness needed to pull it. A wagon on runners is known as a sled. A bouncy ride in a wagon is a vigorous motion. A wagon train is a community with a large collection of wagons and coralled beasts of burden for hauling cargo, either locally or as part of a merchant caravan. Wheelrights can be seen making or fixing wagon wheels.