Over 100 newly discovered sites in the Sultanate of Oman might confirm that modern humans left Africa through Arabia long before genetic evidence suggests - the sites are located far inland. in the Dhofar Mountains of southern Oman, away from the coasts.
Two optically stimulated luminescence age estimates from the open-air site of Aybut Al Auwal in Oman place the Arabian Nubian Complex at ~106,000 years ago, providing archaeological evidence for the presence of a distinct northeast African Middle Stone Age technocomplex in southern Arabia.
Schematic of preferential Levallois core preparation strategies mentioned in text.
Citation: Rose JI, Usik VI, Marks AE, Hilbert YH, Galletti CS, et al. (2011) The Nubian Complex of Dhofar, Oman: An African Middle Stone Age Industry in Southern Arabia. PLoS ONE 6(11): e28239. doi:10.1371/journal.pone.0028239
Also check out: Arabian Artifacts May Rewrite 'Out of Africa' Theory By Charles Choi LiveScience.com