是岩石中产状近直立的裂缝，由于风化、流水侵蚀等外力作用使完整的岩石被切割成彼此分离的破壁面。垂直节理发育是张家界岩石峰林形成的重要前提条件。Vertical joints are near-vertical fissures in the rock. Exogenic processes like weathering and water erosion cut the rock into separated parts. Developed vertical joints is an important precondition for the formation of the peak forest landform in Zhangjiajie.