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雙河洞(dong)，國家(jia)地(di)質(zhi)公園(yuan)，2019年最(zui)新探(tan)測長度為257.4公里，成亞洲(zhou)第一、世(shi)界(jie)第五長洞(dong)。雙河洞(dong)國家(jia)地(di)質(zhi)公園(yuan)，位(wei)于貴州省遵義市(shi)綏(sui)陽縣溫泉鎮，是中國最(zui)大的(de)溶(rong)洞(dong)群(qun)，也(ye)是“世(shi)界(jie)最(zui)長的(de)白(bai)云巖洞(dong)穴”、“世(shi)界(jie)最(zui)大的(de)天青石洞(dong)穴”。

雙河(he)洞(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)結構復(fu)雜，水洞(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)、旱(han)洞(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)并存，深(shen)度超過(guo)550米，由上中下(xia)(xia)四層(ceng)8條(tiao)主(zhu)洞(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)，200多條(tiao)支洞(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)，5條(tiao)地(di)下(xia)(xia)河(he)，34個(ge)洞(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)口組成(cheng)，可謂洞(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)挨洞(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)、洞(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)連洞(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)、洞(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)上有洞(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)、洞(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)下(xia)(xia)有洞(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)、洞(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)中套洞(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)，被(bei)譽(yu)為“喀斯(si)特天(tian)然洞(dong)(dong)(dong)(dong)(dong)(dong)(dong)(dong)穴博物館”。

自1988年(nian)以(yi)來(lai)，雙(shuang)河(he)洞(dong)(dong)(dong)吸引了(le)海外(wai)探(tan)險家持續(xu)探(tan)測31年(nian)之久。截(jie)至2017年(nian)4月，完成(cheng)探(tan)測長(chang)(chang)度(du)達200.427公(gong)里，是世(shi)(shi)界排(pai)名第十的長(chang)(chang)洞(dong)(dong)(dong)。雙(shuang)河(he)洞(dong)(dong)(dong)也(ye)是目前世(shi)(shi)界最長(chang)(chang)的白云巖和世(shi)(shi)界最大(da)的天青石洞(dong)(dong)(dong)穴。