nationalgeographic.com/news
February 6, 2008
Oldest Oil Paintings Found in Caves
A newly discovered mural is one of many in 12 of Afghanistan's famed Bamian caves that show evidence of an oil-based binder. The binder was used to dry paint and help it adhere to rocky surfaces.
The murals—and the remains of two giant, destroyed Buddhas—include the world's oldest known oil-based paint, predating European uses of the substance by at least a hundred years, scientists announced late last month.
Researchers made the discovery while conducting a chemical analysis as part of preservation and restoration efforts at Bamian, which lies about 145 miles (240 kilometers) northwest of the Afghan capital, Kabul.