Bolivia is a South American nation neighboring Argentina, Chile, Peru, Brazil, and Paraguay. In Bolivia, emcees rap in the local Indian language Aymara and in Spanish.

sites on Bolvian Hip Hop:
Bolivia Hip Hop
A great article on Hip Hop in Bolivia: Rapping in Aymara: Bolivian Hip Hop as an Instrument of Struggle.
An article on Hip Hop's popularity among the Indian population in Bolivia: Indian youth in Bolivian city embrace hip-hop.
Another article: Young Bolivians Adopt Urban U.S. Pose, Hip-Hop and All.
A picture of Diego of the group Eniex, rapping with altitude at a mural competition.
Articles on the American breakdancing group Havikoro's visit to Bolivia (Spanish, English).

other artists:
Abraham Bojorquez, from El Alto.
Insano (Myspace page), from El Alto.
La Gran Llajta (Myspace page), from Kochapompa.
Tatuajez (Myspace page) from La Paz.
Wayna Rap (Myspace page), from El Alto.
Ricon Callejero (Myspace page).
Rimadores Locos
The Cronic
Arte Callejero
Dasher
Vane MC
Jotace
Dazzle

If you've got any more info, lemme know- send me a message.