Great walk, starting only about an hour from my place! Spectacular views over the steep Werribee Gorge. The river, of the same name, has cut a massive slice through the country over the millennia. A relatively easy walk takes you from the car park, along a creek valley and some spurs to the Lookout.
More Pictures: At my PicasaWeb album of this walk.
Listed in: The Parks Victoria free PDF Werribee Gorge State Park – Visitor Guide plus a number of bushwalking books, including Walk 24 in Daywalks Around Melbourne as covered here.
Location: About 15 minutes from Bacchus Marsh (see map below).
Advice: Books say to wear hiking boots (not runners) and take a walking pole. I agree as the walk, whilst under an hour each way, has parts that are a bit steep and with loose stones. I think it would be slippery after rain too.
Map: created from my GPS logs and converted to Google Maps format. Note the link to view it in a larger map at the end. From that larger map, you can then view the route in glorious 3D in Google Earth; highly recommended. [googlemaps https://maps.google.com.au/maps/ms?hl=en&ie=UTF8&msa=0&msid=113937947825616366172.00048853b5111843da89e&ll=-37.661605,144.338593&spn=0.016307,0.027466&z=15&output=embed&w=640&h=480]