Umba Valley
For other uses, see Umba (disambiguation).
Umba Valley is a geographic area in Tanzania and the world's only source of Umba sapphires.
The Umba River flows through the Umba Valley.
Specifically, Umba Valley is located in the north of Usambara Mountains in the Tanga Region of Tanzania.
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References
Coordinates: 4°40′50″N 39°12′48″E / 4.6806°N 39.2133°E
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