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24. Tynong North - Hamilton Creek Cave

This information has been developed from one or more of these publications:

  • Sites of Geological and Geomorphological Significance in the Westernport Bay Catchment (1984) by Neville Rosengren.
  • Sites of Geological and Geomorphological Significance in the Western Region of Melbourne (1986) by Neville Rosengren
  • Sites of Geological and Geomorphological Significance on the Coast of Port Phillip Bay (1988) by Neville Rosengren.
  • Sites of Environmental Significance in the Flood Plain of the Upper Yarra Valley Region (1983) by Neville Rosengren, Douglas Frood and Kim Lowe (as part of a study of Sites of Environmental Significance by the University of Melbourne for the then Upper Yarra Valley and Dandenong Ranges Authority).
Geological heritage sites, including sites of geomorphological interest and volcanic heritage sites, are under regular revision by the Geological Society of Australia, especially in the assessment of significance and values. Reference should be made to the most recent reports. See the Earth Science Heritage section of the Geological Society of Australia website (external link) for details of geological heritage reports, and a bibliography.

Location:Tonimbuk - 816909. Eight kilometres north Tynong on a tributary of Hamilton Creek.

Access:
Walk from Tonimbuk Road.

Ownership:
Crown Land.

Geology/Geomorphology:
A sector of the stream flows underground and is reported to have a chamber three metres wide and up to five metres high (Max Weatherhead pers. comm.). No details are available and the cave was not located during this survey.

Significance:
State. Accessible sectors of underground streams in granite are unusual in Victoria. The site awaits more detailed survey.

Management:
Class 1. No forestry operations or roadworks should be permitted on the area of this site.

References:
Finlayson (1981).

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