The northern coast is much indented, abounding in rocky headlands and rugged cliffs, with an almost continuous fringe of islands. On one of these islands is Mozambique, and immediately north of that port is Conducia Bay. Somewhat farther north are two large bays, Fernao Veloso Bay and Memba Bay. Nacala on Fernao Veloso Bay is the principal seaport on the northern coast, with a rail link to Malawi and the coalfields of northwestern Mozambique. North of Fernao Veloso and Memba bays is Pemba Bay, where there is commodious anchorage for heavy draught vessels. North of Pemba Bay the Quirimbas Islands lie offshore, and numerous bays and estuaries indent the coast. Cape Delgado, the northernmost point on Mozambique's coast, is part of the delta of the Ruvuma River, which forms Mozambique's border with Tanzania.