Scientists from the University of Adelaide and the University of Aberdeen have uncovered the cluster of volcanoes using advanced subsurface imaging technology designed to identify craters, lava and magma chambers. The Mail Online reports the volcanoes developed in the Jurassic period, which was around 180 to 60million years ago. But the field of volcanoes has been buried deep underground beneath hundreds of of metres of sedimentary rocks in the Cooper-Eromanga basins.