Cave exploration, or potholing, as it has come to be known, is a relatively new sport.

洞穴勘察-或者洞穴勘探(人们已经熟悉了这个词语)-是一项较新的运动。

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A recent exploration results show that in remote jungle areas in Vietnam has recently found a large cave so far discovered in the world's largest single cave passage.

一项最新勘探结果显示，最近在越南偏远丛林地区发现的一个大型洞穴是迄今为止发现的世界上最大的单个洞穴通道。

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Other activities included cave exploration, rock climbing and traversing coastlines, Mr Bradford added.

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Aside from cave exploration, Cahyo next year plans to lead a marine expedition, with a team comprising government officials, the media and researchers, on a traditional phinisi sailing boat.

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