In addition, images may need to be radiometrically and atmospherically corrected. Nor are there particular "OWL" rocks which can be examined and radiometrically dated. Jebel Buhais is the oldest radiometrically dated inland burial site in the UAE. It is usually assumed that stereo cameras have been calibrated previously, geometrically and radiometrically. The formation is approximately Early Eocene, Ypresian in age, being radiometrically dated as . This geological formation has not been dated radiometrically. Pictures taken by these satellites are radiometrically changed from numbers into physical units. As with many sloth fossils, these species of sloth have not been radiometrically dated.