<P> The figures, dating from approximately the late third century BCE, were discovered in 1974 by local farmers in Lintong District, Xi'an, People's Republic of China, Shaanxi province . The figures vary in height according to their roles, with the tallest being the generals . The figures include warriors, chariots and horses . Estimates from 2007 were that the three pits containing the Terracotta Army held more than 8,000 soldiers, 130 chariots with 520 horses and 150 cavalry horses, the majority of which remained buried in the pits nearby Qin Shi Huang's mausoleum . Other terracotta non-military figures were found in other pits, including officials, acrobats, strongmen and musicians . </P> <P> The construction of the tomb was described by historian Sima Qian (145--90 BCE) in his most noted work Shiji, written a century after the mausoleum's completion . Work on the mausoleum began in 246 BCE soon after Emperor Qin (then aged 13) ascended the throne, and the project eventually involved 700,000 workers . Geographer Li Daoyuan, writing six centuries after the First Emperor's death, recorded in Shui Jing Zhu that Mount Li was a favoured location due to its auspicious geology, "famed for its jade mines, its northern side was rich in gold, and its southern side rich in beautiful jade; the First Emperor, covetous of its fine reputation, therefore chose to be buried there". Sima Qian wrote that the First Emperor was buried with palaces, towers, officials, valuable artifacts and wondrous objects . According to this account, 100 flowing rivers were simulated using mercury, and above them the ceiling was decorated with heavenly bodies below which were the features of the land . Some translations of this passage refer to "models" or "imitations"; however, those words were not used in the original text, which makes no mention of the terracotta army . High levels of mercury were found in the soil of the tomb mound, giving credence to Sima Qian's account . Later historical accounts suggested that the tomb had been looted by Xiang Yu, a contender for the throne after the death of the first emperor . However, there are indications that the tomb may not have been plundered . </P> <P> The Terracotta Army was discovered on 29 March 1974 by farmers digging a water well approximately 1.5 kilometres (0.93 mi) east of the Qin Emperor's tomb mound at Mount Li (Lishan), a region riddled with underground springs and watercourses . For centuries, occasional reports mentioned pieces of terracotta figures and fragments of the Qin necropolis--roofing tiles, bricks and chunks of masonry . This discovery prompted Chinese archaeologists to investigate, revealing the largest pottery figurine group ever found in China . A museum complex has since been constructed over the area, with the largest pit enclosed within with a large structure . </P> <P> The Terracotta Army is part of a much larger necropolis . Ground - penetrating radar and core sampling have measured the area to be approximately 98 square kilometers (38 square miles). </P>

When was the terracotta army discovered in china