Main Ridge is mainly a rural district on the Mornington Peninsula to the south of Arthurs Seat and Dromana. It is 65 km south of central Melbourne.
Arthurs Seat is a granitic hill which is joined to a hilly range backing into the peninsula. The name Main Ridge is a geographic description of the landform. The elevation of Main Ridge attracts relatively heavy rainfall and white settlement of the area involved timber cutting in advance of farming. Splitters Creek (ie timber splitters) is one of several streams which drain southwards.