Jammed between eleven fellow volunteers in a white four-by-four, I’ve asked myself more than once what the devil I am actually doing here. For about four hours now, the car has jolted along a red adobe road, going west from the town of Tanga to the Usambara Mountains. The road narrows until it is nothing more than a dry, winding, bumpy riverbed. When we finally arrive, we are greeted by about 50 children singing a welcome song in English mixed with Kiswahili, both official languages in Tanzania. Read more.