Mt William is the highest peak in the Grampians, so it has a telecommunications tower on top. This means that there is an access road up to the top. However the road is not for mere (unfit) mortals like the Fella and me to drive up! We had to walk. The advantage was that it was a road, and so no rock hopping. (More of that in another post.) The disadvantage was that the incline was fairly constant for all of the 1.8 km we had to walk.
The cairn at the top said that the road was built in 1963. It was quite possible that when we camped in the Grampians as a child that we drove all the way up to the top.
I stopped often, with the excuse of taking photos of the lovely views and wild flowers. Really I was just letting my heart rate settle a little! As you enjoy the photos, think of the effort I went to, just for you!