Lake Mungo remains
Later in the same year, research led by Alan Thorne gave a new estimate of 62,000 years old (plus or minus 6,000 years). This estimate was made by combining data from uranium-thorium dating, electron spin resonance dating and optically stimulated luminescence (OSL) dating of the remains and the soil in the grave. This estimate was very controversial, and some of the techniques used to get this estimate were criticised.