Hanging Rock, Victoria
…names (Mount Diogenes, Diogenes' Head, Diogenes Monument, Dryden's Rock, Dryden's Monument and Hanging Rock) have also been recorded. Hanging Rock is a mamelon, created 6.25 million years ago by stiff magma oozing from a vent and congealing in place. It is not a volcanic plug. There are two other mamelons…