Overview
The arch, called Water Moon Cave, was cut by the river through soluble karst limestone — the same process that made the whole Guilin landscape. A Ming pagoda sits on the hill’s back. The park around it is small and the ticket is not cheap for what it is, which is why many visitors photograph the hill from the free riverbank opposite.
Highlights
The classic shot is from the park’s riverside terrace, with the arch’s reflection completing a circle in still water. Climb to the pagoda for the view along the two rivers. Come early: this is the first stop on most Guilin bus tours, and by ten the terrace is full.