In 1950, G. M. Black found 126 skulls at the site.[1] It has been difficult to give an exact age for the skulls, but one has been dated to 14,300 years ago.[1] Some of the skulls also show artificial cranial deformation.[3] The age, location, and deformities make the site similar to another Pleistocene site at Kow Swamp.[2][4] Some scientists have said that this shows they were part of the same population, but others have disagreed.[1] Because Coolbool Creek skulls were found on the surface it is difficult to date them, and other scientists have argued that they might be much older.[1]
The skulls were kept at the University of Melbourne until 1984. They were then returned to the local Aboriginal communities and reburied.[2]
