Thien Quyen Cave, part of the Hung Van Stone Sea Scenic Area in Yibin City, Sichuan Province, China, and a component of the Hung Van Global Geopark, formed approximately 3 million years ago. It has become a popular tourist attraction.

The cave's explored length spans 10,5 km, featuring a four-tiered vertical structure and nearly 100 large and small branch caves. Groundwater erosion has sculpted diverse rock formations inside, including stalagmites, columns, and flowstones.

Inside Thien Quyen Cave. Photo: Baidu

Beyond its geological research value, Thien Quyen Cave has developed tourism services that blend technology with adventurous activities. Visitors can enjoy ziplining, explore an underground river, or experience a long-table banquet and traditional song and dance performances by the Miao people right inside the cave.

To reach the central hall, the area's management operates mot slide system built along the natural rock face. This experience entirely replaces traditional walking, allowing visitors to quickly access the massive cave structure.

"There are likely mixed opinions about placing mot giant slide in an ancient space, but this is a very innovative way to explore," shared visitor Travis Leon.

The slide path guides participants through narrow, illuminated crevices. The slide concludes in the central hall area. The male visitor noted that the massive limestone formations create a strong visual effect, giving the sensation of "stepping onto another planet."

From this point, visitors continue on foot to explore deeper levels before transferring to wooden boats at the cave's base. They then follow the 1,5 km Thien Quyen underground river to exit. The tourist area currently welcomes guests on floor 3 and floor 4, offering a tour route of approximately 3 km. The internal temperature consistently remains around 18 degrees Celsius.

Admission to the tourist area costs 80 yuan (approximately 280,000 dong) during peak season and 40 yuan (approximately 140,000 dong) during off-peak season. Internal experience services, such as the slide or underground boat ride, are sold separately, each priced at 20 yuan (approximately 70,000 dong) per ride.

Minh Trang (According to Travis Leon, Baidu)