自(zi)然(ran)溶洞(dong)(dong)(dong)有(you)各種天然(ran)的(de)(de)奇異景(jing)觀，有(you)些(xie)天然(ran)溶洞(dong)(dong)(dong)美不勝收。溶洞(dong)(dong)(dong)是可(ke)溶性巖石中(zhong)因(yin)喀(ka)斯(si)特(te)作用所形(xing)成(cheng)的(de)(de)地下(xia)(xia)空間，溶洞(dong)(dong)(dong)的(de)(de)形(xing)成(cheng)是石灰巖地區地下(xia)(xia)水長期(qi)溶蝕(shi)的(de)(de)結果。你知道哪些(xie)溶洞(dong)(dong)(dong)是自(zi)然(ran)形(xing)成(cheng)的(de)(de)嗎？世界自(zi)然(ran)形(xing)成(cheng)的(de)(de)溶洞(dong)(dong)(dong)有(you)哪些(xie)呢？本文整理了(le)世界十大自(zi)然(ran)形(xing)成(cheng)溶洞(dong)(dong)(dong)，包(bao)括猛犸洞(dong)(dong)(dong)、韓(han)松洞(dong)(dong)(dong)、斯(si)科契揚溶洞(dong)(dong)(dong)、歐(ou)若恩多加洞(dong)(dong)(dong)穴、越南蝕(shi)洞(dong)(dong)(dong)、芬格洞(dong)(dong)(dong)穴等，一起來看看吧。