Introduction to python vine: In Ziyang Longdong Resort, there is a snake-like vine - python vine. The bark of this kind of vine is brown and black. It takes root on the ground, and the roots give birth to vines. Like snakes and pythons, they scurry around endlessly in the forest and on rocks, forming a "dragon and snake world." According to the survey, the python vines in Ziyang Longdong climb an area of ​​more than 200 acres from "Longdong Slope" to the top of Ziyang Mountain, and more than 300 of them have roots in the soil. If these vines were stretched and measured, the total length would exceed 500 kilometers. The thickest python vine is as thick as a bucket, more than 50 centimeters in diameter, and more than a thousand years old.