The Comoros are located at the northern entrance of the Mozambique Channel, between the eastern shore of the African continent and the island of Madagascar, which lies about 480 km (300 mi) to the SE . Comparatively, the area occupied by the Comoros Islands is slightly more than 12 times the size of Washington, D.C. The islands have a combined area of 2,170 sq km (838 sq mi), of which Grande Comore (Njazídja), the largest and northernmost island, comprises 1,148 sq km (443 sq mi); Mohéli (Mwali), lying to the S of Grande Comore, 290 sq km (112 sq mi); and Anjouan (Nzwani) to the E of Mohéli, 424 sq km (164 sq mi). There are also several small islands. The Comoros extend about 180 km (110 mi) ESE – WNW and 100 km (62 mi) NNE – SSW , with a total coastline of 340 km (211 mi). Mayotte, the fourth major island in the Comoros Archipelago, covering an area of 374 sq km (144 sq mi), is claimed by the Comoros but remains under French territorial administration. The capital city Moroni, is located at the western edge of the island of Grande Comore.