Local Directions The Park is best accessed from the Latrobe Valley via the towns of Traralgon or Moe. Signposted roads direct you to the townships of Erica and Rawson.
From here follow the Thomson Valley Road 11 km to the Mount Erica car park turnoff, or continue to the Mount St Gwinear turn off. The approach to St Gwinear is along 13 km of winding gravel road. Care must be taken and chains are required in winter. The Thomson Dam and Aberfeldy River are accessed from this same road.