For 10 points— name this country found to the south of the similar Rwanda.
Ngozi and Gitega are some cities in this country, which contains Mount Heha. Its northwestern  border is defined by the Ruwa River, and this country's interior contains such rivers as the  Ruvironza and Rvubu. Bordering (*) Tanzania on the east and Lake Tanganyika on the south, its capital is Bujumbura. For 10 points— name this country found to the south of the similar Rwanda.
Ngozi and Gitega are some cities in this country, which contains Mount Heha.
Burundi