 The Mousterian tool culture is named after Le Moustier, which was first excavated from 1863 by the Englishman Henry Christy and the Frenchman Édouard Lartet.The Le Moustier skull is estimated to be approximately 45,000 years old.Its characteristics include a large nasal cavity and a somewhat less developed brow ridge and occipital bun, as might be expected in a juvenile.