The large volcanic island of Réunion, 800 km (500 miles) east of Madagascar, provides France with an important strategic presence – and a large military base – in the Indian Ocean. Its mountainous interior has forced the majority of the population to live along the coast. Tensions still exist between the very poor black community and the wealthy Indian and European groups, although the violence of 1991 has not been repeated. Unemployment is high and the cost of living very expensive. Réunion's main crop is sugarcane, although Cyclone Dina devastated production in 2002.