Moroni is the largest city, federal capital and seat of the government of the Union of the Comoros, a sovereign archipelago nation in the Indian Ocean.
Wikipedia

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.
Wikipedia