boulders at hanging rock geological formation in australia

active age aussie australasia australia beautiful bedrock boulder boulders clast climbing conglomerate diogenes drydens education erratic formation former fragment garden geological geology gisborne glacial granite hanging hesket ice landscape macedon magma mamelon massive melbourne monolith mount mountain move nature newham ngannelong oceania place plug ranges rock scenic sedimentary soda state stone trachyte vic victoria volcanic volcano