龍(long)門(men)(men)溶洞(dong)(dong)風景名(ming)勝區地處龍(long)門(men)(men)鄉(xiang)青龍(long)場，距成(cheng)都2小時車(che)程（約180公(gong)里(li)），距雅(ya)安市50公(gong)里(li)。龍(long)門(men)(men)洞(dong)(dong)穴(xue)群(qun)是中(zhong)國(guo)(guo)乃至世界上地質(zhi)洞(dong)(dong)穴(xue)的重(zhong)大發現，是中(zhong)國(guo)(guo)目前發現的最(zui)大的洞(dong)(dong)穴(xue)群(qun)，是亞洲第一的礫巖溶洞(dong)(dong)。
龍門溶(rong)洞(dong)(dong)(dong)(dong)(dong)面(mian)積估計在80平(ping)方公(gong)(gong)(gong)里(li)(li)以上，長(chang)度100多公(gong)(gong)(gong)里(li)(li)，現在主洞(dong)(dong)(dong)(dong)(dong)區已經(jing)開(kai)發了(le)20公(gong)(gong)(gong)里(li)(li)左右(you)，洞(dong)(dong)(dong)(dong)(dong)內四季(ji)恒(heng)溫，夏(xia)(xia)季(ji)清涼可人，是消夏(xia)(xia)避暑的(de)(de)好去(qu)處。洞(dong)(dong)(dong)(dong)(dong)內有(you)多層洞(dong)(dong)(dong)(dong)(dong)水空間，200米以下的(de)(de)地方有(you)色(se)彩斑斕的(de)(de)原始礫巖河(he)床和(he)長(chang)流不(bu)息的(de)(de)暗河(he)。洞(dong)(dong)(dong)(dong)(dong)內的(de)(de)主要景觀(guan)(guan)有(you)金(jin)牛廳、龍鎖關、步金(jin)殿、金(jin)沙巷等，還有(you)洞(dong)(dong)(dong)(dong)(dong)中飛瀑、天光銀柱等自(zi)然奇觀(guan)(guan)。
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