Introduction to Shegeng Chuan Cave: Shegen Chuan Cave is located on the south slope of Shegenna Mengtun on the northeast side of Sanmenhai. The tiankeng is polygonal in shape. The entrance is 480 meters high and 50 meters above the valley in the center of the slope. There is a simple The highway passes through the hole, which is 239 meters long, 78-142 meters wide, 60-76 meters high, and the thickness of the cave roof is 25-100 meters.