A round bale forming apparatus comprising a first bale forming chamber (26) and a second bale forming chamber (28), the second bale forming chamber being positioned rearwardly of the first bale forming chamber； each of the first and second bale forming chambers comprising means for forming a bale from a crop product； a feeding mechanism which feeds the crop product into the bale forming apparatus in order to form a bale from the crop product； transfer means (50) for transferring a partially formed bale from the first bale forming chamber into the second bale forming chamber； and directional means for directing the crop product from the feeding mechanism into the first bale forming chamber or the second bale forming chamber such that a partially formed bale is formable in the first bale forming chamber and a fully formed bale is formable in the second bale forming chamber.
