Hedin's expedition notes laid the foundations for a precise mapping of Central Asia. He was one of the first European scientific explorers to employ indigenous scientists and research assistants on his expeditions. Although primarily an explorer, he was also the first to unearth the ruins of ancient Buddhist cities in Chinese Central Asia. However, as his main interest in archaeology was finding ancient cities, he had little interest in gathering data thorough scientific excavations. Of small stature, with a bookish, bespectacled appearance, Hedin nevertheless proved himself a determined explorer, surviving several close brushes with death from hostile forces and the elements over his long career. His scientific documentation and popular travelogues, some of them illustrated with his own photographs, watercolor paintings and drawings, his adventure stories for young readers and his lecture tours abroad made him world-famous.