ナショナルジオグラフィックのインスタグラム(natgeo) - 2月12日 15時53分

Photo by @shonephoto (Robbie Shone) - North of the Wujiang River in Wulong county, China, the mountains that surround the small town of Tongzi are riddled with immense cathedral-like caverns and deep vertical pits that seem to go on down forever. This vast area of limestone awaits any intrepid explorer. Light shines all around an American explorer (pictured above) as he climbs the rope he installed in the centre of this epic cave shaft known as Xinu Attic.

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