The Comoros archipelago consists of four main islands aligned along a northwest-southeast axis at the north end of the Mozambique Channel, between Mozambique and the island of Madagascar. Still widely known by their French names, the islands officially have been called by their Swahili names by the Comorian government. They are Njazidja (Grande Comore), Mwali (Mohéli), Nzwani (Anjouan), and Mahoré (Mayotte).
The islands have a total land area of 2,236 square kilometers (including Mahoré), and claim territorial waters of 320 square kilometers. Le Karthala (2316 m) on Grande Comore is an active volcano.
The archipelago is notable for its diverse culture and history, as a nation formed at the crossroads of many civilizations. Though in the contested island of Mayotte the sole official language is French, the "Union of the Comoros" has three official languages: Comorian (Shikomor), Arabic and French.