A massive limestone cave in east China's Zhejiang Province has attracted flocks of foreign visitors to experience thrilling underground adventures.

Located in Yaolin Town, Tonglu County of Zhejiang, the scenic spot is the first cave-based via ferrata course in east China, featuring magnificent stalactites, stalagmites, and colorful subterranean lighting illuminating natural rock sculptures.

In addition to spectacular geological formations, the via ferrata course also offers physical challenges like climbing and zip lining along the natural karst rock walls.

"Oh my god. It was really, really scary. I cannot take it for long. Every time I see myself from up to down, I think 'I will fall. I will fall.' So I just wanted to go. Don't look any side, just go. I was not brave, but this time, it changed all of my experience and everything," said Nura, a tourist from Tajikistan.

"This is my first time seeing and being at a cave. So it was amazing, it was fun, and I did not expect to have this climbing type thing. I love coming here. All my stress just disappears if I come to TongLu," said Hamzah, a tourist from Yemen.