5.0
Natural Wonders
Chongqing Wansheng Heishan Valley
chongqing, China
Chongqing Wansheng Heishan Valley is renowned for its stunning karst landscapes and is home to the world's longest underground river, stretching over 10 kilometers.
Best time to visit
Autumn
Insider tip
Try visiting Chongqing Wansheng Heishan Valley in the early morning to avoid the crowds and enjoy a peaceful hike throug...
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