Abstract: This pa per presents the result of a preliminary study o n a prehistoric site named Laolongdong Cave in Yuxi District, Yunnan Province. Cultural remains unearthed from the site and reported in this paper include artifacts made o f stone, bone and antler. A discussion was made o n the age of the site based on the features of cultural remains and faunal fossils.
The study demonstrates that this cultural complex possesses its ow n characteristics and has connections with other prehistoric cultures in neighouning region. Therefore, it is a very important prehistoric site ( including Upper Paleolithic cultural horizons) found in southwestern China, especially in Yunnan Province recently , thus provides important clues for the research on the diversity o f Upper Paleolithic cultural types in South China.

Key words: Laolongdong , Prehistoric site, Lithic artifacts, Bone and antler implements