In 1963, a prospector, Mr T. Dimer, claimed that he could locate an enormous iron meteorite that was reputed to be “as big as a motor car”. Rumours of a large meteorite on the Nullarbor had evidently circulated since at least 1944. Two unsuccessful expeditions to locate it were conducted during the 1960s. In April 1966, two large masses estimated to be 10-12 tons and 4-6 tons, later named Mundrabilla, were found approximately 200 yards (ca. 183 m) apart and described by the finders R. B. Wilson and A. M. Cooney.
The 12.4 tonne main mass (recently accurately weighed) of the Mundrabilla meteorite shower is the largest meteorite yet found in Australia. In all, some 22 tonnes of fragments of this ancient meteorite shower have been recovered.