天生桥曾是金盆----大干河古洞穴系统的一部分,古洞穴通道解体,局部残留洞穴顶拱形成这世界上最高的公路大生桥。
This article is published by HowToTrip. Sharing and reposting are welcome — please credit the source. Article URL: https://www.howtotrip.net/travel-13124