The Rastafarians say they smoke marijuana because it is their sacrament – the equivalent of bread and wine given during Christian communions.
The nearly 800 Rastafarians who live in the area say they are fulfilling a prophecy that descendants of slaves will return to Africa.
However, they also face considerable challenges, having left their lives in countries including the UK, the US and Jamaica. They have few legal rights, their passports having expired a long time ago.
They have no Ethiopian IDs, which means they cannot work legally. Local development has shrunk the land they currently live on to an area of around 5 square hectares.
Al Jazeera’s Charles Stratford reports from Shashamane.