Li County
Changde is known for its many Paleolithic and Neolithic sites. About 500 of them have been discovered to date. In 1984 neolithic human settlements were discovered in Li County, part of Changde. In 1988, the Pengtoushan site was excavated leading to the identification of the "Pengtoushan Culture". The site contains the earliest evidence of a settled village yet discovered in China. Archeological research from 2011 suggests that a settlement called Shanlonggang, part of the Pengtoushan civilization, may have cultivated rice 8,000-9,000 years ago, making it the possible birthplace of rice cultivation.