Indandatho yamahlathi iyiphethini eyinqaba enkulu eyindilinga yobuningi besihlahla esiphansi ebikwa kakhulu emahlathini ashubile enyakatho yeCanada. Kubikwe nakwamanye amahlathi aseRussia nase-Australia. Lezi zindandatho zingahluka kusuka kumamitha angama-50 kuye cishe kumakhilomitha ama-2 ububanzi, ngamarimu acishe abe ngamamitha angama-20 ubukhulu.
Imvelaphi yendandatho yehlathi ayaziwa, yize kunezinqubo eziningana ezifana nefungus ekhula ngamandla, amapayipi e-kimberlite afihlekile, amaphakethe egesi abhajwe, umphumela we-meteorite, ama-craters njll.
Izindandatho zehlathi bekucatshangwa ukuthi ziyimiphumela yesikhunta esikhulayo esisezingeni eliphakathi kohlelo lwempande lwe-spruce emnyama ngokwesayensi eyaziwa ngokuthi UMariana spruce, futhi kungenzeka ukuthi ukhunta I-Armillaria ostoyae.
Indandatho ingaqala njengephuzu elilodwa lokungcola futhi ikhule iye ngaphandle kuzo zonke izinhlangothi. Izihlahla ezithintekile zingafa phakathi nendawo yombuthano, futhi ekugcineni, izihlahla ezintsha zingakhula endaweni yazo. Kodwa ukuqagela kwezinto eziphilayo akusathandwa njengoba kunobufakazi obuncane obushukumisayo bokusekela leyo mfundiso eyenza ukuthi ixake kakhulu futhi iqondakale.
