National Geographic : 1955 Dec
are fiber sandals found by University of Oregon excavators in Fort Rock Cave, Ore gon. Their age is about 9,000 years. Bas ketry fragments from Danger Cave, Utah, dated by charcoal found near by, may be slightly older (page 796). The oldest American material so far dated which is thought to be of human origin is charcoal from an ancient lake-bed deposit near Tule Springs, Nevada. A carbon 14 test shows it to be more than 23,800 years old. In Europe and Africa, tests bring equally amazing results. Charcoal from Lascaux Cave in southwestern France, where remarkable paintings were made by ancient hunter-artists, has aged for about 15,500 years.* A fossil skull, found with many stone im plements at the Florisbad site near Bloem fontein, South Africa, has been given a tenta tive age of at least 41,000 years. Constantly improving their tools for de tecting and analyzing radioactivity, scientists hope soon to calculate tiny remnants of * See "Lascaux Cave, Cradle of World Art," by Norbert Casteret, NATIONAL GEOGRAPHIC MAGAZINE, December, 1948.