mt gambier; Mount Gambier is the largest regional city in South Australia located approximately 450 kilometres south of the capital Adelaide and just 17 kilometres from the Victorian border.
It takes its name from the Mount Gambier, a crater sighted in 1800 by Lieutenant James Grant from the survey brig, HMS Lady Nelson, and named for Lord James Gambier, Admiral of the Fleet.
mt gambier blue lake ; The Blue Lake in Mount Gambier, South Australia is a large monomictic lake located in an extinct volcanic maar associated with the Mount Gambier maar complex. It is one of four crater lakes on Mount Gambier. Of the four lakes, only two remain, as the other two (Leg of Mutton and Brown) have dried up over the past 30 to 40 years as the water table has dropped.
Conflicting dates have been estimated for its last eruption, of 28,000 years ago and 4300 years ago. If the more recent date is correct, this could be the most recent volcanic eruption on the Australian mainland
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