I am sure a lot of you have already experienced free camping along our mighty Murray River. There are numerous spots to camp! I personalty love the beaches around Tocumwal & between Cobram & Yarrawonga ( Cobrawonga). Not all sites would be suitable for big rigs but there are quite a few that you would have no problems accessing. If in the Tocumwal area, heads up as there are plenty of Koalas in this area. Attached is a link you may find helpful.
