Introduction to Qianren Cave: Qianren Cave The entrance of Qianren Cave is 13 meters high and 20 meters wide. The cave hall is S-shaped, 105 meters long, 26 meters wide and 15 meters high. Because the cave hall is wide and tall, it can accommodate more than a thousand people. And got its name. In June 1965, Dale Jian of the Institute of Paleoanthropology and Vertebrate Paleontology of the Chinese Academy of Sciences and Bai Yunzhe of the Shandong Provincial Museum discovered a large area of ​​more than 10 meters thick and multi-layered cultural accumulation in this cave, and collected 38 pieces of stone tools and a large number of wild animals. Animal bone fossils are cultural relics from the Late Paleolithic period 10,000 to 20,000 years ago. At that time, it was the first Paleolithic cultural relic found in Shandong and even the entire East China region. Therefore, Qianren Cave was called "Shandong No. 1 Cave".