Abahamba ngeenqanawa bahlala bekulungele ukuya kwimida yeMhlaba ukuze babe nethuba lokunikela ubungqina ngokuqala ukuhlawula ezinye izinto ezibonakalayo ezithandekayo emhlabeni wonke. Ukususela kwiintaba zeentaba ezinqambile kwiinqaba zamanxweme angapheliyo olunxwemeni lolwandle, ngokuqinisekileyo kukho indawo eninzi eneempawu ezintle eziye zalawulwa ukusibamba iingcamango zethu. Kodwa ezinye zeendawo ezintle kakhulu azifumaneki kwindawo yomhlaba, njengoko kuninzi kubonakala phantsi kwayo.
Enyanisweni, ezinye zezinto ezintle kakhulu ezithandwa yizilwanyana zitholakala ngaphakathi kwiindawo zokuhlambela komhlaba. Ngaloo nto engqondweni, nantlanu iinkqubo ezinkulu zokungcwaba apho wonke umntu ohambahambayo kufuneka abe nalo uluhlu lwakhe lweendawo zokutyelela.
I-Carlsbad Caverns National Park (eMerika)
ISewula iNew Mexico isekhaya kwelinye lezona ndlela zihamba phambili kwilizwe lonke ngendlela yeCarlsbad Caverns National Park. Ngaphezulu kweenkulungwane, i-sulfuric acids ichithe i-calestone apho, idala enye yezona ndawo zihle kakhulu eziphantsi komhlaba ezifunyenwe naphina emhlabeni. Ngama-chambers angaphezu kwama-119 kunye nangaphezu kweekhilomitha ezilikhulu zokuhamba, iCarlsbad Caverns iyimimangaliso yokubona. Okuphezulu kwoluhlu "Igumbi Elikhulu," ikamelo elikhulu elingaphaya kwama-4000 amamitha ubude, ii-625 iiimitha (191 metres) ububanzi, kunye neeyure ezingama-78 ubude. Abaveleli banokukhetha ukunyuka ukuya emaphandleni ngokwabo okanye bathathe i-elevator kwiziko leendwendwe elithintela ngamanamitha angama-230.
I-Doong Cave (iVietnam)
Ukulinganisa iikhilomitha eziyi-8.8 ubude, iNdodana ye-Doong yaseVietnam ibonisa ukuba yinto ephakathi kweendawo ezikhuselekileyo ezinkulu kwihlabathi lonke. Okokuqala kutholakale ngo-1991, kwaye kamva ipapashwe ngendwendwe ngo-2009, i-caver yavula ngokukhenketho okokuqala ngqa ngo-2013.
Umqolomba ukhulu kangangokuthi iindonga zawo ezidongeni ezingaphezu kwamamitha angama-122 ngaphezulu, kwaye ininzi yekamelo igxinwa ebumnyameni nangona iindwendwe ziza zixhobile ngezibane ezikhanyayo. UNyana weTyelelo u-Doong akulula; Itholakala ngaphakathi entliziyweni yamahlathi aseDietnam, kwaye omnye umqhubi mnye okwangoku unikwe ilayisenisi yokukhokela iityelele ngaphakathi kwendawo yomqolomba. I-Oxalis Adventures inikeza uhambo lweentsuku ezingama-7/6 ngobusuku obufanele bhenkce nakwiindawo ezihamba phambili zokuhamba.
IMulu Caves (Borneo)
I-Park ye-Gunung Mulu yeBergneo ihlala kwikhaya elingaphantsi komhlaba eliphakathi kweyona ndawo enkulu kunazo zonke emhlabeni, ubuncinane ngokwemigangatho yomhlaba wonke. Ziquka iNkundla enkulu yeSarawak, engama-2300 inyawo (ubude beemitha ezili-700), ubude be-1299 ububanzi (396 meter) ubude, kunye neepesenti ezingama-70 ubude. Ixhaphaza kwiCave Deer Cave, enye yeyona mibhalo enkulu yecala eyaziwayo ukuba ikhona, ukulingana kwamamitha angama-169 ububanzi, ubude beemitha ezili-125 ubude, kunye neekhilomitha ezili-1 ubude. Umqolomba ufumana igama layo kwinto yokuba abantu basekuhlaleni bajikeleza ngaphakathi ukuze batyeke ityuwa ukusuka ematyeni ngezikhathi ezithile, ukuvumela ukuba iindwendwe zizibone ngezihlandlo.
Abaqhubi bezotyelelo banikezela abahamba ngezohambo ithuba lokuba bahlolisise le mibhoba ngemihambo engama-3/2-ebusuku ehlabathini elingaqhelekanga, elincinci, elingaphantsi komhlaba elingaphantsi komhlaba.