So we went to the Grampians last week. We camped at Trooper's Creek. This was a good base camp location; there were walks direct from the campground plus plenty close by. The kids got to climb on rocks most days, we cooked on an open fire, and there was a small creek to play beside (too cold and small to actually get in to). Furthermore there were some really chubby wallabies who'd take food from your hand, so many clumps of grass and leaves were thus disbursed.