Otways is fairly large. Hundreds of tracks. More than two weeks of solid driving to be had. Hema have a great map of the area. Beauchamp falls is near a lot of options. Timing plays a role, one trip i happened to go just before the winter closures, and it was very wet, slippery, muddy (and fun).
I frequented the area years ago when tracks like clear water and noonday were still open, now a lot of those tracks are closed for good, there is a lot of dirt rd to drive but track wise dunno if you would find 2 weeks solid entertainment. Even 10 years ago the likes of redwater and Calder ridge were already closed off for good tracks like kennit wye jeep were closed for years and eventually re routed No idea when all the tracks down at the cape were shut but it was well before my time It's a shame 15 years ago we could drive all the way to Cray fish bay
All i know is that there were closed tracks, and i wished i could drive on them. I did some research before i went there for the first time and was expecting to struggle to find 4wd tracks, but we found heaps. Maybe some 2wd tracks have deteriorated into 4wd tracks? Some 2wd tracks become 4wd when its really wet and slippery.
Up there the Main roads turn to bog after decent rain https://4x4earth.com/forum/index.php?threads/otway-ranges-nat-park.1927/page-3
