Despite its reputation of being the highest mountain in western Australia, it is surprisingly an easy walk up if you pace yourself. We started at 11:30 and were back down before 4pm. The sun sets at 5 at this time (May - June) of the year so getting out of the mountain before that is a safe idea.
You need a water-proof jacket preferably with fleece lining or pack a warm sweater because the last 600 metres of the route has a totally different climate from the rest. It is much, much cooler. You also need a pair of comfortable shoes (preferably water proof because rain is unpredictable up there and the path can get muddy) and warm socks. I was wearing my Nikes and I saw others in hiking boots, but strictly speaking, they are not an absolute necessity.
Arrived with a full stomach, I nevertheless brought 500ml of water (cloudy day, when it is sunny you may need more and perhaps a hat because there is not much shade) and 6 sweet mandarins with me and I think the fruit is tasting extra delicious when you are sweating and panting away. They make breaks in between a sweet treat. The closest major town I believe is Mount Barker, which has a supa iga supermarket to stock up. From there it is an hour ride To the carpark at the foothill of bluff knoll.
It's not a difficult climb, more like a walk up the hill. You don't need to go down on all fours. There are two corners when it looks like you have to abseil the slippery rock surface but don't be fooled because you will find the path takes a right turn when you get there and it is again a uphill footpath again.
The total length from the carpark is 3.1km and there are markers at the beginning, then 1.6km, then 1.1km, then 0.6km, where you are basically on top of western Australia from then on to the summit.
It snows sometimes, it's probably terribly windy when that happens but I think it will be an experience to watch snow in western Australia. The views up there are 'magnificent', except the mountain was shrouded in cloud so I didn't see anything. The air was alpine fresh, and wet. It rained every 10 minutes on the way!
The entrance fee to the national park is AUD 11 for a car per day. You can try climb all the other mountains in the park if you still have energy left.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.