Ji Guan Dong is located in Luoyang City, Henan Province, China, and is renowned as a spectacular karst landscape. The cave features impressive stalactites and stalagmites, with shimmering fluorescence creating an ethereal, almost otherworldly, experience. The “Silver River Waterfall” is a particularly breathtaking sight, with a subterranean river cascading down from hundreds of feet, creating a rainbow of light.