Kikundi cha wanafunzi wakitembelea machimbo ya bonde la mto Umba ambako hupatikana madini ya: Sapphire, Ruby, Garnet, Turmalin, Spinell na Zircon. Wakishirikiana na wachimbaji wa eneo hilo.
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Gemstone Safari to Umba | ![]() |
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© Hati miliki ya picha zote Noreen Masaki