Mount Schank

Mount Schank is part of the Newer Volcanics Province, which is the youngest volcanic field in Australia. Mount Schank erupted in the Holocene, 5,000 years ago, about the same time as Mount Gambier^[3][4] . It is a very basic ash cone perhaps a hundred metres high, and the base of the crater does not extend below the water table, so there is no crater lake as with those at Mount Gambier. There are two small subsidiary craters adjacent to the main cone and some lava flows resulting from the eruption. The northern crater is circular, 300 m (980 ft) in diameter and 100 m (330 ft) deep, the older southern crater is 200 m (660 ft) in diameter and partially overlapped by the larger crater.^[4]

• http://en.wikipedia.org/wiki/Mount Schank