The Comoros is a volcanic archipelago off Africa’s east coast, in the warm Indian Ocean waters of the Mozambique Channel. The nation state’s largest island, Grande Comore (Ngazidja) is ringed by beaches and old lava from active Mt. Karthala volcano. Around the port and medina in the capital, Moroni, are carved doors and a white colonnaded mosque, the Ancienne Mosquée du Vendredi, recalling the islands’ Arab heritage. Comoros, an independent state comprising three of the Comoro Islands in the Indian Ocean, off the coast of East Africa. A fourth island of the Comorian archipelago, Mayotte, is claimed by the country of Comoros but administered by France.