雙河洞(dong)(dong),國家(jia)地質公園,2019年最新探測長(chang)度(du)為257.4公里,成亞洲第一(yi)、世界(jie)第五長(chang)洞(dong)(dong)。雙河洞(dong)(dong)國家(jia)地質公園,位(wei)于貴州省遵義市綏陽(yang)縣溫泉鎮,是中國最大的溶洞(dong)(dong)群(qun),也(ye)是“世界(jie)最長(chang)的白云巖洞(dong)(dong)穴”、“世界(jie)最大的天青石洞(dong)(dong)穴”。
雙河洞(dong)(dong)(dong)結(jie)構復雜,水洞(dong)(dong)(dong)、旱(han)洞(dong)(dong)(dong)并存,深度超過550米,由上中下(xia)(xia)四層8條(tiao)主洞(dong)(dong)(dong),200多(duo)條(tiao)支洞(dong)(dong)(dong),5條(tiao)地下(xia)(xia)河,34個洞(dong)(dong)(dong)口組成(cheng),可謂洞(dong)(dong)(dong)挨(ai)洞(dong)(dong)(dong)、洞(dong)(dong)(dong)連洞(dong)(dong)(dong)、洞(dong)(dong)(dong)上有洞(dong)(dong)(dong)、洞(dong)(dong)(dong)下(xia)(xia)有洞(dong)(dong)(dong)、洞(dong)(dong)(dong)中套洞(dong)(dong)(dong),被譽為“喀斯特天然(ran)洞(dong)(dong)(dong)穴博物(wu)館”。
自1988年(nian)以來(lai),雙河(he)洞(dong)吸引了海外探(tan)險(xian)家持續(xu)探(tan)測31年(nian)之久。截至2017年(nian)4月,完(wan)成探(tan)測長(chang)度達200.427公里,是(shi)世(shi)界(jie)排名第十(shi)的長(chang)洞(dong)。雙河(he)洞(dong)也是(shi)目前(qian)世(shi)界(jie)最(zui)(zui)長(chang)的白(bai)云巖和(he)世(shi)界(jie)最(zui)(zui)大的天青石洞(dong)穴。