The blue waters that flow from Son Nu Cave find their way to Khe May Stream.
Nguyen Ngoc Quy, director of Quang Binh's Department of Tourism, hailed the discovery of this new cave as a boon for the local tourism industry.
"The Department of Tourism will collaborate with Quang Ninh District to conduct a survey and develop a tourism strategy, prioritizing the safety and well-being of all visitors," he said.