Festival Nyungwe in Tete
A festival concept honoring the Nyungwe (Tawara) people of the middle Zambezi valley around Tete, whose language gave the city its name, though no independently confirmed recurring event under this exact name was located.
It is worth clarifying first what this festival name refers to, since Nyungwe is also the name of a famous rainforest national park in Rwanda, an unrelated place on the other side of the African continent.