<prompt> Bhala okuqhubekayo kwalesi sigaba - Ngo-1970, iqembu lezintaba kanye noHeckel lahlela ukuvakashela e - Alaska. Injongo yabo yaphazanyiswa umbuso wobuKhomanisi waseCzechoslovakia. Ngemva kokucindezelwa  <response>: Ngemva kwePrague Spring ngo-1968, cishe kwakungenakwenzeka ukuya emazweni aseNtshonalanga. Leli qembu lashintsha icebo lalo futhi lanquma ukukhuphukela eziqongweni zeCordillera Blanca yasePeru. UHeckel nabanye abambalwa ayesebenza nabo babehlele ukushiya lolu hambo futhi bagxile kakhulu ekutadisheni nasekubhaleni isiko lasePeru. Nokho, ngemva kokushona komunye wabaholi balo mkhankaso, umqwali u-Ivan Bortel, baphoqeleka ukuba bahlale ekamu nabanye ababehamba nalo mkhankaso. NgoJuni 1, 1970, uHeckel nozakwabo babehlose ukuhlukana neqembu lonke. Ngengozi, isikhukhula esibangelwe ukuzamazama komhlaba okukhulu ePeru sangcwaba ikamu labo ngaphansi kweHuascarán ngoMeyi 31, 1970, ngosuku olwandulela ukuhamba kwabo. Wonke amalungu alo mkhumbi afa. 