Tien Son Cave, yakagara mukati VietnamPhong Nha-Ke Bang National Park, yakagadzirirwa kugamuchira vashanyi zvakare muna Zvita 21 mushure mekuvharwa kwemakore matatu kwekugadzirisa kwakawanda.
Bako, chikamu chakakosha cheiyo inozivikanwa Phong Nha bako system, yakagadziridzwa uye kugadziriswa, ichivimbisa chiitiko chakawedzerwa kune vashanyi.
Iri pamamita mazana maviri kubva pamusuwo weiyo inozivikanwa Phong Nha Bako, Tien Son Cave inoda kukwira kwematanho mazana mashanu nemakumi masere nenhatu asi inopa mubayiro vashanyi nechitarisiko che200-mita-yakareba.
Iro bako rakarongeka riri pakati pegomo rinopa maonero anokatyamadza, akamira 200 metres pamusoro pegungwa uye 120 metres pamusoro peSon River.
Pakutanga yakawanikwa muna 1935 uye yakazovhurwa yekushanya muna 2000, bako iri rine kukosha kwenhoroondo. Kuvandudzwa kuchangoburwa panguva yekuvharwa kunosanganisira nzira dzakagadziridzwa, nzvimbo dzekuzorora, uye matenga matsva emaruva akagadzirwa nemaruva, kuve nechokwadi chekuchengetedza uye kukwezva.
Chakanyanya kukwidziridzwa ibhiriji idzva regirazi, rinoda kusvika 100 metres pamusoro peRwizi rweSon, rinopa maonero anoyevedza enzvimbo yakatenderedza, kusanganisira mupunga, chibage, uye minda yenzimbe.
Vashanyi vanogona kufamba munzira inotenderera mukati mebako, vachiongorora nzira mbiri dzakasiyana dzinosvika 400 metres imwe neimwe. Zvisikwa zve geological maumbirwo, akavezwa pamusoro pemamiriyoni emakore, akamirira mukati-kati, achipa mucherechedzo wehunyanzvi hwechisikigo.
Matikiti eTien Son Cave ari mutengo paVND80,000 ($3.28) pakushanya, nekubvumidzwa kwemahara kwevana vari pasi pe1.3 metres kureba.
Ikepe yekufambisa yekuona nzvimbo, inogara vanhu vanosvika gumi nevaviri, inowanikwa VND12 ($550,000) rwendo rwokudzoka. Kune vafambi vari kutsvaga kuongorora ese Phong Nha uye Tien Son mapako, mubhadharo wechikepe unoramba uri VND22 parwendo.
