Oldest rock art in Egypt discovered

YaleNews | Oldest rock art in Egypt discovered: "Using a new technology known as optically stimulated luminescence (OSL), a team of Belgian scientists and Professor John Coleman Darnell of Yale have determined that Egyptian petroglyphs found at the east bank of the Nile are about 15,000 years old, making them the oldest rock art in Egypt and possibly the earliest known graphic record in North Africa."