Songshan group

例句：

1. 1. The Songshangroup is a significant discovery in the fieldof archaeology.
   松山组是考古学领域的一个重大发现。
2. 2. The Songshan group has beendated to the Neolithic period, dating back toaround 4000 BCE.
   松山组被认为属于新石器时代，大约公元前4000年。
3. 3. The Songshan group is renownedfor its unique rock formations and historicalsignificance.
   松山组因其独特的岩石形态和历史重要性而闻名。