Ka taƙaita labarin:  Ita ce kogon da ya fi girma a duniya, da duwatsu masu tsayi, da tsire-tsire masu kama da daji da kuma yanayi. Don haka ba abin mamaki ba ne da mai daukar hoto Ryan Deboodt, mai shekara 31, ya dogara da jirgi mara matuki don ɗaukar hotunan da ke nuna girman girman kogon Hang Son Doong a Vietnam. Sakamakon bidiyo ne mai ban mamaki wanda ke nuna yanayin ban mamaki a cikin kogon, wanda ke da nisan mil 5.5, 650ft fadi da 500ft tsawo. Ana buɗewa tare da harbe-harbe a fadin tsire-tsire masu tsire-tsire masu tsire-tsire da masu ba da labari suna tafiya a cikin kogon suna da tsayi da kewaye da su. Ryan, asalinsa Ba'amurke ne amma yanzu yana zama a Beijing, China, ya kwatanta kogon kamar kamar wata duniyar waje ce. Ya ce: 'Wannan ita ce ziyarata ta uku a Son Doong. A zahiri a minti na karshe ne na yanke shawarar ɗaukar jirgin sama mara matuki da ni. Da farko na shiga kogon ne domin in tattara kyamarori uku da na yi amfani da su na tsawon watanni shida don yin rikodin ambaliyar ruwa. Tsarin ya dauki Ryan kwanaki takwas don kammalawa kuma an buƙaci ya ɗauki igiyoyi da yawa, kayan aiki da kayan tsaro a cikin kogon tare da shi. Drone ya kama tsayin dutsen mai ban mamaki kuma mutane a cikin hotuna suna kama da tabo a kan shimfidar wuri. Wani lokaci da ya wuce ya kama wani hasken hasken rana yana motsawa ta saman kogon a cikin rana. Hotunan da aka dauka a waje na kogon sun nuna girmansa kuma sun kama girman girmansa na mita 500. Masu yawon bude ido da ke da fam 1,800 (dala 3,000) za su iya yin rangadin kogon tare da kamfanin da ake kira Oxalis. Ƙungiyar masu ɗaukan kaya fiye da 25, ƙwararrun masu tsaro da kuma masu ba da ja-gora suna yin rangadin har tsawon kwanaki shida. Tafiya zuwa kogon yana ɗaukar kwana ɗaya da rabi ta cikin gandun daji mara kyau, kafin ka sauka zuwa 260ft zuwa ƙofar. Dole ne a yi rajistar yawon shakatawa a gaba kamar yadda akwai iyakacin iyaka na baƙi 10 a kowace tashi. Ya ce: 'A cikin kogon duka dole ne ka mai da hankali sosai, kamar yadda wani abu mai sauƙi kamar ƙafar da ta karye zai iya jawo baƙin ciki da ƙoƙari sosai don ka fita daga kogon.' Ryan ya bayyana cewa yayin da yake cikin kogon ba zai kasance ba...
Wani mai daukar hoto ya dauki bidiyo na kogon Hang Son Doong na Vietnam ta amfani da jirgi mara matuki don kama girman girmansa. Masu tafiya a cikin kogon suna bayyana kamar spots a cikin babban wuri mai faɗi wanda gandun daji da dutsen dutse suka mamaye. Hang Son Doong ya ƙunshi tsire-tsire masu kama da gandun daji, ruwa da tsaunukan tsaunuka kuma shine mafi girman kogo a duniya.