Iqela labatshintshi lifumanise ukuba eyona mqolomba mikhulu emhlabeni inkulu kakhulu kunaye nabani na ngaphambili.

Ngexesha lokuntywila kwinyanga ephelileyo, iqela lase-Bhritane lafumanisa itonela engaphantsi kwamanzi edibanisa umqolomba omkhulu, Son Son, eVietnam, nomnye umqolomba omkhulu, obizwa ngokuba yiHang Thung. Nje ukuba imiqolomba idityaniswe ngokusesikweni, iya kulinganisa i-1,4 yezigidi zeenyawo zenyawo.

Ingafana nomntu ofumene isigaxa phezu kweNtaba i-Everest, sayenza enye i-1,000 yeemitha ukuphakama, uWoward Limbert, omnye wabaququzeleli bokuntywila, uxelele i-CNN Travel . Nawuphi na umqolomba emhlabeni uya kukwazi ukulunga kamnandi ngaphakathi kweNgoma Dong xa idibene- kwaye iiapos zigqithile ngobukhulu.

Ukuntywila kubandakanya amanye amalungu eqela bahlangula abadlali bebhola ekhatywayo baseThai emqolombeni apho babebanjiswe khona iiveki ezimbini kunyaka ophelileyo.

Unyana u-Doong ubekwe kwi-Central Vietnam, entliziyweni ye-Phong Nha Ke Bang National Park. Kuqwalaselwa njengomqolomba omkhulu emhlabeni, ngokusekwe kumthamo. Yafunyanwa ngengozi ngo-1990 kwaye yaqwalaselwa kuphela yiBritish Cave Research Association ngo-2009. Yavulelwa iindwendwe ngo-2013 kwaye ngoku ifikeleleka kuphela kwinkampani yokhenketho yeOxalis.

Umqolomba womlambo kucingelwa ukuba ubuncinci ubuneminyaka engama-3 ezigidi ubudala. Ilinganisa ngaphezu kweemayile ezintathu ubude, kwaye kweyona inkulu, umqolomba ungaphezulu kwe-650 yeenyawo ubude, kwaye phantse i-500 yeenyawo ububanzi.

Iindidi ziceba ukubuya ngo-Epreli 2020. Leyo nyanga ithathwa njengeyona nto intle yokuntywila njengoko kulapho imiqolomba kulula ukuyihlola ngenxa yamanqanaba asezantsi amanzi kunye nokubonakala okuphezulu.