<prompt> Fingqa isihloko: Izazi zemivubukulo ziye zathola ithuluzi lamatshe e-Oregon elisikisela ukuthi abantu babehlala entshonalanga ye-U.S. ngaphambili kunalokho obekucatshangwa. Leli thuluzi le-agate latholakala ngaphansi kwengqimba eminyene yomlotha wentaba-mlilo owaqubuka ngesikhathi kuqhuma iNtaba iSt Helens eminyakeni engu-15.800 edlule. Ososayensi bakholelwa ukuthi ummese wokuqala, owatholakala ngaphansi komhlaba ngamamitha angu-3,6, wawusetshenziselwa ukusika izikhumba zezilwane, ukuhlakaza inyama, nokusika izinkuni ngabantu bangaphambi kukaClovis. Izazi zemivubukulo ziye zathola ithuluzi lamatshe e-Oregon elisikisela ukuthi abantu babehlala entshonalanga ye-U.S. ngaphambili kunalokho obekucatshangwa. Ithuluzi le-agate latholakala ngaphansi kwengqimba eminyene yomlotha wentaba-mlilo owavela ngesikhathi kuqhuma iNtaba iSt Helens eminyakeni engu-15.800 edlule. Lokhu okutholakele, eRimrock Draw Rockshelter, kumenyezelwe namuhla yi-U.S. Bureau of Land Management, elawula izwe lapho kutholakale khona indawo. Isazi semivubukulo uScott Thomas sathi uma ubudala bendawo bungase buqinisekiswe, kuyoba ukutholakala okudala kakhulu kwangaphambi kukaClovis entshonalanga yeRocky Mountains. Bekuyoba futhi mdala kunomunye owandulela lokho okubizwa ngokuthi isiko likaClovis, okwakucatshangwa ukuthi abantu bokuqala abathuthela eNyakatho Melika besuka e - Asia. Izinto zokuqala ezenziwe uClovis, ezaziwa ngamatshe azo aphawulekayo futhi anobuciko, zabhalwa eminyakeni engaba ngu - 13 000 edlule. UProfesa Patrick OGrady wase-Oregon University wabiza lokhu okutholakele ngokuthi okuthakazelisayo. Lokhu okutholakele, eRimrock Draw Rockshelter, kumenyezelwe namuhla yi-U.S. Bureau of Land Management, elawula izwe lapho kutholakale khona indawo. Isazi semivubukulo uScott Thomas sathi uma iminyaka yale ndawo ingase ibhekwe ngokucophelela, yayiyoba endala kunazo zonke entshonalanga yezintaba eziNtabeni zaseRocky. Kodwa wanezela ukuthi bafuna ukuqhubeka nokumba kuleli hlobo ukuze babone ukuthi umlotha wentaba-mlilo uyasibekela yini sonke lesi sifunda. UDonald Grayson, uprofesa wesayensi yemivubukulo e-University of Washington, wathi umphakathi wezesayensi wawungabaza. Izindawo ezimbili zangaphambi kukaClovis zibhalwe kahle futhi ngokuvamile zamukelwa ososayensi. Elinye yiPaisley Cave, etholakala cishe emakhilomitheni angu - 60 eningizimu - ntshonalanga yendawo yaseRimrock. Elinye iMonte Verde eChile. Zombili zi...  <response>: Ithuluzi le-agate latholakala ngaphansi kwengqimba eminyene yomlotha wentaba-mlilo. Yayisetshenziselwa ukusika izikhumba, ukuhlakaza inyama, nokuqopha izinkuni. Kutholakale eRimrock Draw Rockshelter eningizimu-mpumalanga ye-Oregon. Uma usuku lweRimrock luyiqiniso, kwakuyofaka abantu kuleyo ndawo eminyakeni engaba ngu-1 500 ngaphambili kwalokho ababekukholelwa, ekupheleni kwenkathi yePleistocene. 