绵延川甘边境的岷山,有一条支脉——摩天岭。从四川省的南坪县、平武县境内跨入甘肃省的文县,山峰陡峭,突兀险峻,成为两省天然分界线。海拔最高处达四千多米。这一带有悬马关、黄土梁、青塘关等三个隘口进入四川,是古今战略家奇袭四川的捷径,也是这块穷乡僻壤历史上进行中药材和土特产交易的通道。它的贡献、它的价值已被史 Minshan stretches along the Sichuan-Gansu border, there is a branch - Mount Morrow. From Nanping County and Pingwu County in Sichuan Province, they stepped into Wen County, Gansu Province, with steep peaks and precipitous steepness that became the natural dividing line between the two provinces. The highest elevation of more than four thousand meters. This is a shortcut with three passways including Horse Tracks, Loess Beam and Qingtang Pass entering Sichuan Province. It is a shortcut for strategists to hit Sichuan in ancient and modern times and is also a channel for Chinese herbal medicines and native products transactions in this backcountry history. Its contribution to its value has been history