Back in the Japanese era, a Japanese archaeologist came here to do research. "There are an unknown number of slate stone pillars erected in the ground," he wrote at the time. "The largest is about four and a half meters tall, and the others are all between two and four meters.
記得日據時期有位日籍考古學者鹿野忠雄來此做研究，當時他形容，「有數不清的板岩『石柱』豎立在地表，其中最大的一片高約四公尺半，其餘的大多在二至四公尺之間。