M'zaka zaposachedwa, ulusi wa basalt watulukira ngati chinthu chochititsa chidwi, chokopa chidwi cha mafakitale padziko lonse lapansi. Wochokera ku thanthwe losungunuka la basalt, ulusi watsopanowu umakhala ndi zinthu zapadera, kuphatikiza kulimba kwamphamvu, kukhazikika kwamafuta, komanso kukana dzimbiri. Zotsatira zake, ntchito zake zimayenda m'magawo osiyanasiyana, kuyambira pa zomangamanga ndi zamagalimoto mpaka zamlengalenga ndi zomangamanga. Masiku ano, tikufufuza zakusintha kwa ulusi wa basalt ndi tsogolo lake lodalirika popanga mafakitale amakono.