All excavation ceased for World War I. When it was over the Ottoman Empire was no longer a factor there. In 1919 the new British School of Archaeology in Jerusalem assumed archaeological operations in Palestine. John Garstang finally resumed excavation at Jericho 1930–1936. The renewed dig uncovered another 3000 years of prehistory that was in the Neolithic but did not make use of pottery. He called it the Pre-pottery Neolithic, as opposed to the Pottery Neolithic, subsequently often called the Aceramic or Pre-ceramic and Ceramic Neolithic.